| Книга |
|
1
|
Stefan Ivanov, Ivan Minchev, Dimiter Vassilev, Quaternionic contact Einstein structures and quaternionic contact Yamabe problem, Memoirs Amer. Math. Soc., vol. 231, number 1086, Ref, Рецензирано, International
|
2014
|
|
2
|
Stefan Ivanov, Dimter Vassilev, Extremals of the Sobolev inequality and the quaternionic
contact Yamabe problem, ISBN:978-981-4295-70-3; 981-4295-70-1, World Scientific Publishing Co, Hackensack, NJ, Ref, Рецензирано, International
|
2011
|
| Научен проект |
|
1
|
Стефан Иванов, Contract KP-06-H72-1/05.12.2023 with the National Science Fund of Bulgaria, Ръководител,
|
2023
|
|
2
|
Стефан Иванов, European Union-Next Generation EU, through the National Recovery and Resilience Plan of the Republic of Bulgaria, project %№
SUMMIT BG-RRP-2.004-0008-C01. , Ръководител,
|
2023
|
|
3
|
Стефан Иванов, Диференцируеми многообразия със структури, Член, ФНИ-СУ
|
2021
|
|
4
|
Стефан Иванов, National Science Fund of Bulgaria, National Scientific Program ``VIHREN", Project KP-06-DV-7., Член,
|
2020
|
|
5
|
Стефан Иванов, Диференцируеми многообразия със структури, Член, ФНИ - СУ
|
2020
|
|
6
|
Стефан Иванов, Диференцируеми многообразия със структури, Член, ФНИ - СУ
|
2019
|
|
7
|
Стефан Иванов, Диференцируеми многообразия със структури, Член, ФНИ - СУ
|
2018
|
|
8
|
Стефан Иванов, Геометрия и анализ на ЧДУ, специaлни холономии и суперсиметрични струни, Ръководител, МОН - ФОНД "НАУЧНИ ИЗСЛЕДВаНИЯ", Номер на договора:ДН 12/3/12.12.2017 ФНИ МОН
|
2017
|
|
9
|
Стефан Иванов, Диференцируеми многообразия със структури, Член, ФНИ на СУ
|
2017
|
|
10
|
Стефан Иванов, Диференцируеми многообразия със структури, Член, ФНИ на СУ
|
2016
|
|
11
|
Стефан Иванов, Диференцируеми многообразия със структури, Член, ФНИ на СУ
|
2015
|
|
12
|
Стефан Иванов, Геометрия и Анализ на ЧДУ и хетеротични струни, Ръководител, МОН-ФОНД "НАУЧНИ ИЗСЛЕДВАНИЯ", Номер на договора:DFNI I02/4/2014
|
2014
|
|
13
|
Стефан Иванов, Диференцируеми многообразия със структури, Член, СУ "Св. Кл.Охридски", Номер на договора:168/2014
|
2014
|
|
14
|
Стефан Иванов, Диференцируеми многообразия със структури, Член, СУ "Св. Кл.Охридски", Номер на договора:156/2013
|
2013
|
|
15
|
Стефан Иванов, Диференцируеми многообразия със структури, Член, СУ "Св. Кл.Охридски", Номер на договора:130/2012
|
2012
|
|
16
|
Стефан Иванов, Диференцируеми многообразия със структури, Член, СУ "Св. Кл.Охридски", Номер на договора:181/2011
|
2011
|
|
17
|
Стефан Иванов, Диференцируеми многообразия със структури, Член, , Номер на договора:198/2010
|
2010
|
|
18
|
Стефан Иванов, “Геометрия и анализ на ЧДУ, проблеми на Ямабе и хетеротични струни”, Ръководител, ФНИ на МОМН, Номер на договора:Contract ``Idei", DID 02-39/21.12.2009
|
2009
|
|
19
|
Стефан Иванов, Диференцируеми многообразия със структури, Член, , Номер на договора:082/2009
|
2009
|
|
20
|
Стефан Иванов, „Квантова структура и геометрична природа на фундаменталните сили”, Член, ФНИ на МОМН, Номер на договора:Contract ``Idei", DO 02-257/18.12.2008.
|
2008
|
| Научно ръководство |
|
1
|
Стефан Иванов, Неравенства на Ли-Яу , ФМИ дипломна работа:Стефан Василев
|
2014
|
|
2
|
Стефан Иванов, Оператор на Дирак и теорема на Лихнерович, дипломна работа:Данаил Стоянов
|
2014
|
|
3
|
Стефан Иванов, Риманови и суб-риманови многообразия със структури, дисертация д-р:Aлександър Петков
|
2014
|
| Редактор на издание реферирано |
|
|
Stefan Ivanov, Annals of Global Analisys and Geometry, Редактор на издание реферирано
|
2000
|
| Статия в научно списание |
|
1
|
Stefan Ivanov, Marina Tchomakova, Simeon Zamkovoy, Conformal paraquaternionic contact curvature and the local flatness theorem, Revista de la Real Academia de Ciencias Exactas, Fisicas y Naturales. Serie A. Matematicas, vol:119, issue:1, 2024, doi:10.1007/s13398-024-01688-8 , Ref, IF (1.8 - 2023), Web of Science Quartile: Q1 (2024), PhD
|
2024
|
|
2
|
Stefan Ivanov, Marina Tchomakova, Simeon Zamkovoy, Geometry of paraquaternionic contact structures, 2404.16713, 2024, PhD
|
2024
|
|
3
|
Stefan Ivanov, Alexander Petkov, Li-Yau sub-gradient estimates and Perelman-type entropy formulas for the heat equation in quaternionic contact geometry, arXiv:2405.14845, 2024
|
2024
|
|
4
|
Stefan Ivanov, Nikola Stanchev, The Riemannian curvature identities on almost Calabi-Yau with torsion 6-manifold and generalized Ricci solitons, Annali di Matematica Pura ed Applicata (1923 -), 2024, doi:DOI:10.1007/s10231-024-01494-4, Ref, IF (1 - 2023), Web of Science Quartile: Q1 (2024), PhD
|
2024
|
|
5
|
Stefan Ivanov, Ivan Minchev, Marina Tchomakova, Twistor and Reflector Spaces for Paraquaternionic Contact Manifolds, MATHEMATICS, vol:12, issue:21, 2024, doi:10.3390/math12213355, Ref, IF, IF (2.15 - 2023), Web of Science Quartile: Q1 (Mathematics), PhD
|
2024
|
|
6
|
Stefan Ivanov, Ivan Minchev, Dimiter Vassilev, Solution of the qc Yamabe equation on a 3-Sasakian manifold and the quaternionic Heisenberg group, ANALYSIS AND PDE DOI: 10.2140/apde.2023..101, vol:Vol. (2023), No. , p. 101, 2023, pages:101-0, ISSN (print):1948-206X, doi: DOI: 10.2140/apde.2023..101, Ref, Web of Science, IF (2.2 - 2022), Web of Science Quartile: Q1 (2023), SCOPUS, SJR (3.11 - 2020), SCOPUS Quartile: Q1 (Q1), International
|
2023
|
|
7
|
Stefan Ivanov, Alexander Petkov, The Almost Schur Lemma in Quaternionic Contact Geometry, Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A. Matemáticas, 2023, doi:https://doi.org/10.1007/s13398-023-01403-z, Ref, IF, IF (2.9 - 2022), Web of Science Quartile: Q1 (15/333)
|
2023
|
|
8
|
Stefan Ivanov, Alexander Petkov, The CR Almost Schur Lemma and the positivity conditions, Ann. Sc. Norm. Super. Pisa Cl. Sci.(5) XIII , 2023, doi:DOI: 10.2422/2036-2145.202301\_011, Ref, IF, IF (1.4 - 2022), Web of Science Quartile: Q1 (2023)
|
2023
|
|
9
|
Stefan Ivanov, Hristo Manev, Mancho Manev, Para-Sasaki-like Riemannian manifolds and new Einstein metrics, Revista de la Real Academia de Ciencias Exactas, Fisicas y Naturales. Serie A. Matematicas, 2021, doi:DOI: 10.1007/s13398-021-01053, Ref, IF, IF (2.276 - 2021), Web of Science Quartile: Q1 (26/333)
|
2021
|
|
10
|
Stefan Ivanov, Milan Zlatanovic, Non-symmetric Riemannian gravity and Sasaki-Einstein 5-manifolds, Classical Quantum Gravity, vol:37, issue:2, 2020, doi:http://dx.doi.org/10.1088/1361-6382/ab5cc3, Ref, IF, IF (3.487 - 2018), Web of Science Quartile: Q1 (2020), International
|
2020
|
|
11
|
Barilari, Davide, Ivanov, Stefan, A Bonnet-Myers type theorem for quaternionic contact structures, CALCULUS OF VARIATIONS AND PARTIAL DIFFERENTIAL EQUATIONS, vol:58, issue:1, 2019, ISSN (print):0944-2669, ISSN (online):1432-0835, doi:10.1007/s00526-018-1467-y
|
2019
|
|
12
|
Davide Barilari, Stefan Ivanov, A sub-Riemannian Bonnet-Myers theorem for quaternionic contact structures, Calculus of Variations and PDE, vol:58, issue:37, 2019, ISSN (print):0944-2669, doi:https://doi.org/10.1007/s00526-018-1467-y, Ref, IF, IF (1.526 - 2019), Web of Science Quartile: Q1 (2019), International
|
2019
|
|
13
|
Marisa Fernandez, Stefan Ivanov, Vicente Munos, Formality of 7-dimensional 3-Sasakian manifolds, Ann. Scuola. Norm. Super. Pisa Cl. Sci., vol:19, issue:1, 2019, pages:297-309, Ref, IF, IF (1.03 - 2019), Web of Science Quartile: Q2 (2019), International
|
2019
|
|
14
|
Stefan Ivanov, Ivan Minchev, Dimiter Vassilev, Non-umbilical quaternionic contact hypersurfaces in hyper-Kähler manifolds, International Mathematics Research Notices, vol:18, 2019, pages:5649-5673, ISSN (print):10737928, doi:https://doi.org/10.1093/imrn/rnx279, Ref, Web of Science, IF (1.291 - 2019), Web of Science Quartile: Q1 (math), SCOPUS, SJR (2.259 - 2019), SCOPUS Quartile: Q1 (math), International
|
2019
|
|
15
|
Stefan Ivanov, Luis Ugarte, On the Strominger system and holomorphic deformations, The Journal of Geometric Analysis, vol:29, 2019, pages:917-935, doi:DOI 10.1007/s12220-018-0023-5, Ref, IF, IF (0.924 - 2019), Web of Science Quartile: Q2 (2019), International
|
2019
|
|
16
|
Stefan Ivanov, Alexander Petkov, The qc Yamabe problem on non-spherical quaternionic contact manifolds, Journal de Mathématiques Pures et Appliquées, vol:118, 2018, pages:44-81, ISSN (print):0021-7824, ISSN (online):1776-3371, doi:https://doi.org/10.1016/j.matpur.2018.06.011, Ref, Web of Science, IF (1.961 - 2018), Web of Science Quartile: Q1 (18/314), SCOPUS, SJR (3.025 - 2018), SCOPUS Quartile: Q1 (2018)
|
2018
|
|
17
|
Stefan Ivanov, Ivan Minchev, Dimiter Vassilev, Quaternionic contact hypersurfaces in hyper-Kähler manifolds, ANNALI DI MATEMATICA PURA ED APPLICATA, vol:196, issue:4, 2017, pages:245-267, doi:DOI 10.1007/s10231-016-0571-x, Ref, Web of Science, IF (1.066 - 2017), Web of Science Quartile: Q1 (math), SCOPUS, SJR (1.197 - 2017), SCOPUS Quartile: Q1 (math), International
|
2017
|
|
18
|
Stefan Ivanov, Alexander Petkov, Dimiter Vassilev, The Obata sphere theorems on a quaternionic contact manifold of dimension bigger than seven, Journal of Spectral Theory, vol:7, issue:4, 2017, pages:1119-1170, ISSN (print):1664-039X, ISSN (online):1664-0403, doi:DOI: 10.4171/JST/187, Ref, Web of Science, IF (0.844 - 2017), Web of Science Quartile: Q2 (108/310), SCOPUS, SJR (1.481 - 2017), SCOPUS Quartile: Q2 (108/310), International
|
2017
|
|
19
|
Stefan Ivanov, Milan Zlatanovic, Connections on non-symmetric (generalized) Riemannian manifold and gravity, Class. Quantum Gravity, vol:33, issue:075016 (2016), 2016, doi:doi:10.1088/0264-9381/33/7/075016, Ref, Web of Science, International
|
2016
|
|
20
|
Stefan Ivanov, Ivan Minchev, Dimiter Vassilev, Quaternionic contact Einstein manifolds, Mathematical research Letters, vol:23, issue:5, 2016, pages:1405-1432, ISSN (print):1073-2780, doi:10.4310/MRL.2016.v23.n5.a8, Ref, Web of Science, IF (0.716 - 2016), Web of Science Quartile: Q2 (math), SCOPUS, SJR (1.401 - 2016), SCOPUS Quartile: Q1 (math), International
|
2016
|
|
21
|
Stefan Ivanov, Hristo Manev, Mancho Manev, Sasaki-like almost contact complex Riemannian manifolds, J. Geom. Phys., vol:107, 2016, pages:136-148, Ref, Web of Science, PhD
|
2016
|
|
22
|
Stefan Ivanov, Dimiter Vassilev, The Lichnerowicz and Obata first eigenvalue theorems and the Obata uniqueness result in the Yamabe problem on CR and quaternionic contact manifolds, Nonlinear Analysis-Theory and Appl., 2015, Web of Science, International
|
2015
|
|
23
|
Marisa Fernandez, Stefan Ivanov, Luic Ugarte, Dimiter Vassilev, The quaternionic Heisenberg group and Heterotic String
Solutions with non-constant dilaton in dimensions 7 and 5, Communications in Mathematical Physics, 2015, doi:(DOI) 10.1007/s00220-015-2397-6, Ref, Web of Science, International
|
2015
|
|
24
|
Marisa Fernande'z, Stefan Ivanov, Luis Ugarte, Dimiter Vassilev, Non-Kaehler Heterotic String Solutions with non-zero fluxes
and non-constant dilaton, J. High Energy Physics (JHEP), vol:06 (2014) 073, 2014, Ref, Web of Science
|
2014
|
|
25
|
Stefan Ivanov, Ivan Minchev, Dimiter Vassilev, Quaternionic contact Einstein structures
and the quaternionic contact Yamabe problem, Memoirs of the American Mathematical Society, 2014, ISSN (print):0065-9266, ISSN (online):1947-6221, ISBN:978-0-8218-9843-7, doi:http://dx.doi.org/10.1090/memo/1086, Web of Science, IF (1.727 - 2014), Web of Science Quartile: Q1 (2014), SCOPUS, SJR (3.163 - 2014), SCOPUS Quartile: Q1 (2014), International
|
2014
|
|
26
|
Stefan Ivanov, Alexander Petkov, Dimiter Vassilev, The sharp lower bound of the first eigenvalue of the
sub-Laplacian on a quaternionic contact manifold, Journal of Geometric Analysis, vol:24, issue:2, 2014, pages:756-778, ISSN (print):1050-6926, ISSN (online):1559-002X, doi:https://doi.org/10.1007/s12220-012-9354-9, Ref, Web of Science, IF (0.971 - 2014), Web of Science Quartile: Q1 (59/312), SCOPUS, SJR (1.294 - 2014), SCOPUS Quartile: Q1 (2014), International
|
2014
|
|
27
|
Stefan Ivanov, Dimiter Vassilev, An Obata-type theorem on a three-dimensional CR
manifold, Glasqow Mathematical Journal, 2013, Ref, Web of Science
|
2013
|
|
28
|
Luis C. de Andre's, Marisa Fernande'z, Stefan Ivanov, Jose Santisteban, Luis Ugarte, Dimiter Vassilev, Quaternionic Kaehler and Spin(7) metrics arising from quaternionic contact Einstein structures, Annali di matematica Pura ed Applicata, 2013, doi:DOI 10.1007/s10231-012-0276-8, Ref, Web of Science
|
2013
|
|
29
|
Stefan Ivanov, Alexander Petkov, Dimiter Vassilev, The sharp lower bound of the first eigenvalue of the sub-Laplacian on a quaternionic contact manifold in dimension seven, Nonlinear Analysis: Theory, Methods & Applications, vol:93, 2013, pages:51-61, ISSN (online):0362-546X, doi:https://doi.org/10.1016/j.na.2013.07.011, Ref, Web of Science, IF (1.612 - 2013), Web of Science Quartile: Q1 (12/302), SCOPUS, SJR (1.588 - 2013), SCOPUS Quartile: Q1 (2013), International
|
2013
|
|
30
|
Stefan Ivanov, George Papadopoulos, Vanishing theorems on (l|k)$-strong Kaehler manifolds with torsion, Advances in Mathematics, vol:237, 2013, pages:147-164, Ref, Web of Science
|
2013
|
|
31
|
Stefan Ivanov, Dimiter Vassilev, An Obata type result for the first eigenvalue of the
sub-Laplacian on a CR manifold with a divergence free torsion, Journal of Geometry, vol:103, 2012, pages:475-504, Ref
|
2012
|
|
32
|
Luis C. de Andre's, Marisa Ferna'ndez, Stefan Ivanov, Jose A. Santisteban, Luis Ugarte, Dimiter Vassilev, Bianchi type A hyper-symplectic metrics and hyper-Kaehler
metrics in 4d, Classical and Quantum Gravity, vol:29, 2012, pages:25003-0, Web of Science
|
2012
|
|
33
|
Stefan Ivanov, Alexander Petkov, HKT manifolds with holonomy SL(n,H), International Mathematics Research Notices, vol:2012, issue:16, 2012, pages:3779-3799, ISSN (print):1073-7928, ISSN (online):1687-0247, doi:https://doi.org/10.1093/imrn/rnr160, Ref, Web of Science, IF (1.116 - 2012), Web of Science Quartile: Q1 (29/296), SCOPUS, SJR (1.854 - 2012), SCOPUS Quartile: Q1 (29/296), PhD
|
2012
|
|
34
|
Stefan Ivanov, Ivan Minchev, Dimitar Vassilev, The optimal constant in the L2 Folland-Stein inequality on the quaternionic Heisenberg group , ANNALI DELLA SCUOLA NORMALE SUPERIORE DI PISA-CLASSE DI SCIENZE , vol:11, issue:4, 2012, pages:635-652, ISSN (print):0391-173X, Ref, IF, IF (683 - 2012), Web of Science Quartile: Q2 (2012), International
|
2012
|
|
35
|
Stefan Ivanov, Ivan Minchev, Dimiter Vassilev, The optimal constant in the L2 Folland-Stein inequality on the quaternionic Heisenberg group, Ann. Sc. Norm. Super. Pisa Cl. Sci., 2012, pages:635-652, Ref, Web of Science, IF (0.683 - 2012), Web of Science Quartile: Q2 (2012), SCOPUS, SJR (1.379 - 2012), SCOPUS Quartile: Q1 (2012), International
|
2012
|
|
36
|
Johann Davidov, Stefan Ivanov, Ivan Minchev, The twistor space of a quaternionic contact manifold, Quarterly Journal of Mathematics, vol:Vol. 63, issue:No. 4, 2012, pages:873-890, doi:https://doi.org/10.1093/qmath/har012, Ref, Web of Science, IF (0.557 - 2012), Web of Science Quartile: Q3 (2012), SCOPUS, SJR (0.523 - 2012), SCOPUS Quartile: Q2 (2012)
|
2012
|
|
37
|
Marisa Ferna'ndez, Stefan Ivanov, Luis Ugarte, Raquel Villacampa, Compact supersymmetric solutions of the heterotic equations
of motion in dimensions 7 and 8, Advances in Theoretical and Mathematical Physics, vol:15, issue:2, 2011, pages:1-41, Web of Science
|
2011
|
|
38
|
Stefan Ivanov, Dimiter Vassilev, Simeon Zamkovoy, Conformal Paracontact curvature and the local flatness
theorem, GEOMETRIAE DEDICATA, vol:144, issue:1, 2010, pages:79-100, ISSN (print):0046-5755 , ISSN (online):1572-9168 , doi:DOI 10.1007/s10711-009-9388-8, Ref, Web of Science, SCOPUS Quartile: Q4 (2010), International
|
2010
|
|
39
|
Stefan Ivanov, Dimiter Vassilev, Conformal quaternionic contact curvature and the local
sphere theorem, Journal des Mathematiques Pures et Appliquees, vol:93, issue:3, 2010, pages:277-307, ISSN (print):0021-7824, doi: DOI: 10.1016/j.matpur.2009.11.002 , Ref, IF, IF (1.45 - 2010), International
|
2010
|
|
40
|
Stefan Ivanov, Ivan Minchev, Dimiter Vassilev, Extremals for the Sobolev inequality on the seven-dimensional quaternionic Heisenberg group and the quaternionic contact Yamabe problem, JOURNAL OF THE EUROPEAN MATHEMATICAL SOCIETY, issue:12, 2010, pages:1041-1067, doi:10.4171/JEMS/222, Ref, Web of Science, SCOPUS Quartile: Q1 (2010), International
|
2010
|
|
41
|
Stefan Ivanov, Heterotic supersymmetry, anomaly cancellation and equations
of motion, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol:685, issue:2-3, 2010, pages:190-196, ISSN (print): 0370-2693, doi: DOI: 10.1016/j.physletb.2010.01.050 , Ref, Web of Science, SCOPUS Quartile: Q1 (6/80)
|
2010
|
|
42
|
Stefan Ivanov, Dimiter Vassilev, Quaternionic contact manifolds with a closed fundamental 4-form, Bulletin of the London Mathematical Society, vol:42, 2010, pages:1021-1030, Web of Science
|
2010
|
|
43
|
Marisa Ferna'ndez, Stefan Ivanov, Luis Ugarte, Raquel Villacampa, Compact supersymmetric solutions of the heterotic equations
of motion in dimension 5, Nuclear Physics B, vol:820, 2009, pages:483-502, Web of Science
|
2009
|
|
44
|
Marisa Ferna'ndez, Stefan Ivanov, Luis Ugarte, Raquel Villacampa, Non-Kaehler Heterotic String Compactifications with
non-zero fluxes and constant dilaton, Communications in Mathematical Physics, vol:288, 2009, pages:677-697, Web of Science
|
2009
|
|
45
|
R. Cleyton, S. Ivanov, Conformal equivalence between certain geometries in dimension 6 and 7, Math. Res. Lett., vol:15, 2008, pages:631-641, Web of Science
|
2008
|
|
46
|
Richard Cleyton, Stefan Ivanov, Curvature decomposition of G2 manifolds, J. Geom. Phys., vol:58, 2008, pages:1429-1449, Web of Science
|
2008
|
|
47
|
M. Ferna'ndez, S. Ivanov, V. Munoz, L. Ugarte, Nearly hypo structures and compact Nearly K¨ahler 6-manifolds with conical singularities , J. London Math. Soc., vol:78, 2008, pages:580-604, Web of Science
|
2008
|
|
48
|
Francisco Marti’n Cabrera, Stefan Ivanov, SU(3)-structures on submanifolds of a SPIN(7)-manifold, Diff. Geom. Appl., vol:26, 2008, pages:113-132, Web of Science
|
2008
|
|
49
|
R. Cleyton, S. Ivanov, On the geometry of closed G2-structures, COMMUNICATIONS IN MATHEMATICAL PHYSICS, vol:270, issue:1, 2007, pages:53-67, ISSN (print):0010-3616, ISSN (online):1432-0916, doi: DOI: 10.1007/s00220-006-0145-7 , Ref, IF, IF (2.07 - 2007), SCOPUS Quartile: Q1 (8/43), International
|
2007
|
|
50
|
Stefan Ivanov, V. Tsanov, Simeon Zamkovoy, Hyper-ParaHermitian manifolds with torsion, Journal of Geometry and Physics, vol:56, issue:4, 2006, pages:670-690, ISSN (print):0393-0440, doi:doi.org/10.1016/j.geomphys.2005.04.012, Ref, Web of Science, SCOPUS Quartile: Q2 (2006)
|
2006
|
|
51
|
Stefan Ivanov, Simeon Zamkovoy, Para-Hermitian and Para-Quaternionic manifolds, Differential Geometry and its Application, vol:23, issue:2, 2005, pages:205-234, ISSN (print):0926-2245, doi:doi:10.1016/j.difgeo.2005.06.002, Ref, Web of Science, SCOPUS Quartile: Q3 (110/181)
|
2005
|
|
52
|
P. Ivanov, S. Ivanov, SU(3)-instantons and G2, Spin(7) heterotic string solitons , COMMUNICATIONS IN MATHEMATICAL PHYSICS, vol:259, issue:1, 2005, pages:79-102, ISSN (print): 0010-3616, ISSN (online):1432-0916, doi: DOI: 10.1007/s00220-005-1396-4 , Ref, Web of Science, SCOPUS Quartile: Q1 (7/38)
|
2005
|
|
53
|
S. Ivanov, Connection with torsion, parallel spinors and geometry of Spin(7) manifolds , Mathematical Research Letters, vol:11, issue:2-3, 2004, pages:171-186, ISSN (print): 1073-2780, doi:DOI: 10.4310/MRL.2004.v11.n2.a3 , Ref, IF, IF (0.716 - 2004)
|
2004
|
|
54
|
Stefan Ivanov, Ivan Minchev, Quaternionic Kähler and hyperKähler manifolds with torsion and twistor spaces, Journal fuer die Reine und Angewandte Mathematik, vol:567, 2004, pages:215-233, ISSN (print):0075-4102, ISSN (online):1435-5345, doi:DOI: https://doi.org/10.1515/crll.2004.012, Ref, Web of Science, IF (0.885 - 2004), Web of Science Quartile: Q1 (23/181), SCOPUS, SJR (2.181 - 2004), SCOPUS Quartile: Q1 (2004)
|
2004
|
|
55
|
Th. Friedrich, S. Ivanov, Almost contact manifolds, connections with torsion, and parallel spinors, Journal für die reine und angewandte Mathematik, vol:559, 2003, pages:217-236, ISSN (print): 0075-4102, ISSN (online):1435-5345, doi: https://doi.org/10.1515/crll.2003.050, Ref, IF, IF (0.719 - 2003), SCOPUS Quartile: Q1 (30/174), International
|
2003
|
|
56
|
J. Gutowski, S. Ivanov, G. Papadopoulos, Deformations of generalized calibrations and compact non-Kahler manifolds with vanishing
first Chern class , Asian Journ. Math., vol:7, 2003, pages:39-80, Ref
|
2003
|
|
57
|
Th. Friedrich, S. Ivanov, Killing spinor equations in dimension 7 and geometry of integrable G2 manifolds
, Journal of Geometry and Physics, vol:48, issue:1, 2003, pages:1-11, ISSN (print): 0393-0440, doi:https://doi.org/10.1016/S0393-0440(03)00005-6, Ref, IF, IF (1.105 - 2003), SCOPUS Quartile: Q1 (24/153), International
|
2003
|
|
58
|
B. Alexandrov, S. Ivanov, Weyl structures with positive Ricci tensor, Diff. Geom. Appl., vol:18, 2003, pages:343-350, ISSN (print):0926-2245, Ref, Web of Science, SCOPUS Quartile: Q3 (2003)
|
2003
|
|
59
|
S. Ivanov, Geometry of Quaternionic K¨ahler connections with torsion , Journal of Geometry and Physics, vol:41, issue:3, 2002, pages:235-257, ISSN (print):0393-0440, doi: DOI: 10.1016/S0393-0440(01)00058-4 , Ref, Web of Science, SCOPUS Quartile: Q1 (20/156)
|
2002
|
|
60
|
Th. Friedrich, S. Ivanov, Parallel spinors and connections with skew-symmetric torsion in string theory , Asian Journal of Mathematics , vol:6, issue:2, 2002, pages:303-336, ISSN (print):1093-6106, ISSN (online):1945-0036, doi:DOI: http://dx.doi.org/10.4310/AJM.2002.v6.n2.a5, International
|
2002
|
|
61
|
S. Ivanov, G. Papadopoulos, A no-go theorem for string warped compactification, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics , vol:497, issue:3-4, 2001, pages:309-316, ISSN (print):0370-2693 , doi: DOI: 10.1016/S0370-2693(00)01330-7 , Ref, IF, IF (4.377 - 2001), SCOPUS Quartile: Q1 (7/67), International
|
2001
|
|
62
|
Georgi Ganchev, Stefan Ivanov, Harmonic and holomorphic 1-forms on
compact balanced Hermitian manifold, Diff. Geom. Appl., vol:14, issue:1, 2001, pages:79-93, Ref, IF, IF (375 - 2001)
|
2001
|
|
63
|
B. Alexandrov, G. Grantcharov, S. Ivanov, The Dolbeault operator on Hermitian spin surfaces, Ann. Inst. Fourier, vol:51, 2001, pages:221-235, ISSN (print):1777-5310, Ref, Web of Science, SCOPUS Quartile: Q2 (2001)
|
2001
|
|
64
|
S. Ivanov, G. Papadopoulos, Vanishing theorems and String Backgrounds, Classical and Quantum Gravity, vol:18, issue:6, 2001, pages:1089-1110, ISSN (print):0264-9381, ISSN (online):1361-6382, doi: DOI: 10.1088/0264-9381/18/6/309 , Ref, Web of Science, SCOPUS Quartile: Q1 (10/67), International
|
2001
|
|
65
|
B. Alexandrov, S. Ivanov, Vanishing theorems on Hermitian manifolds, Diff. Geom. Appl., vol:14, 2001, pages:251-265, ISSN (print):0926-2245, Ref, Web of Science, SCOPUS Quartile: Q3 (2001)
|
2001
|
|
66
|
B. Alexandrov, S. Ivanov, Dirac operators on Hermitian spin surfaces, Ann. Glob. Anal. Geom., vol:18 , 2000, pages:529-539, ISSN (print):0232-704X, Ref, Web of Science, SCOPUS Quartile: Q2 (2000)
|
2000
|
|
67
|
Georgi Ganchev, Stefan Ivanov, Holomorphic and Killing vector fields
on compact balanced Hermitian manifolds, Int. J. Math., vol:11, 2000, pages:15-28, Ref, IF, IF (0.591 - 2000)
|
2000
|
|
68
|
S. Ivanov, Einstein-Weyl structures on compact conformal manifolds, Quarterly Journal of Mathematics , vol:50, issue:200, 1999, pages:457-462, ISSN (print): 0033-5606, ISSN (online):1464-3847, doi:https://doi.org/10.1093/qjmath/50.200.457, Ref, Web of Science, SCOPUS Quartile: Q2 (52/145)
|
1999
|
|
69
|
V. Apostolov, G.Grantcharov, S. Ivanov, Orthogonal complex structures on certain Riemannian 6-manifolds, Differential Geometry and its Application, vol:11, issue:3, 1999, pages:279-296, ISSN (print): 0926-2245, doi:https://doi.org/10.1016/S0926-2245(99)00041-8, Ref, IF, IF (0.258 - 1999), SCOPUS Quartile: Q4 (118/138)
|
1999
|
|
70
|
B. Alexandrov, G. Grantcharov, S. Ivanov, An estimate for the first eigenvalue of the Dirac operator on compact Riemannian spin manifold admitting parallel one-form, J. Geom. Phys., vol:28, 1998, pages:263-270, ISSN (print): 0393-0440, Ref, Web of Science, SCOPUS Quartile: Q1 (1998)
|
1998
|
|
71
|
B. Alexandrov, G. Grantcharov, S. Ivanov, Curvature Properties of Twistor Spaces of Quaternionic Kaеhler Manifolds , J. Geom. , vol:62 , 1998, pages:1-12, ISSN (print):0047-2468, Ref, Web of Science
|
1998
|
|
72
|
V. Apostolov, G.Grantcharov, S. Ivanov, Hermitian Structures on Twistor Spaces, Annals of Global Analysis and Geometry , vol:16, issue:3, 1998, pages:291-308, ISSN (print):0232-704X, ISSN (online):1572-9060, doi: DOI: 10.1023/A:1006548030918 , Ref, IF, IF (0.642 - 1998), SCOPUS Quartile: Q1 (29/138)
|
1998
|
|
73
|
S. Ivanov, I. Petrova, Riemannian manifold in which the skew-symmetric curvature operator has pointwise
constant eigenvalues, Geometriae Dedicata, vol:70, issue:3, 1998, pages:269-282, ISSN (print): 0046-5755, ISSN (online): 1572-9168 , doi:https://doi.org/10.1023/A:1005014507809, Ref, IF, IF (0.288 - 1998), SCOPUS Quartile: Q3 (85/138)
|
1998
|
|
74
|
V. Apostolov, G. Ganchev, S. Ivanov, Compact Hermitian surfaces of constant anti-holomorphic sectional curvature , Proceedings of the American Mathematical Society, vol:125, issue:12, 1997, pages:3705-3714, ISSN (print):0002-9939, ISSN (online):1088-6826, doi: https://doi.org/10.1090/S0002-9939-97-04043-4 , Ref, IF, IF (273 - 1997), SCOPUS Quartile: Q4 (89/117)
|
1997
|
|
75
|
Paul Gauduchon, Stefan Ivanov, Einstein-Hermitian surfaces and Hermitian Einstein-Weyl structures in dimension 4, Mathematische Zeitschrift, vol:226, issue:2, 1997, pages:317-326, ISSN (print):0025-5874, ISSN (online):1432-8232, doi:https://doi.org/10.1007/PL00004342, Ref, Web of Science, SCOPUS Quartile: Q2 (46/136), International
|
1997
|
|
76
|
S. Ivanov, On the fundamental theorem for non-degenerate complex affine hypersurface immersions, Monatshefte fur Mathematik , vol:123, issue:4, 1997, pages:321-336, ISSN (print):0026-9255, ISSN (online):1436-5081, doi: DOI: 10.1007/BF01326767 , Ref, IF, IF (0.326 - 1997), SCOPUS Quartile: Q2 (68/136)
|
1997
|
|
77
|
S. Ivanov, I. Petrova, Riemannian manifolds in which certain curvature operator has constant eigenvalues along each circle, Ann. Global Anal. Geom., vol:15, 1997, pages:157-171, Web of Science
|
1997
|
|
78
|
Stefan Ivanov, On dual-projectively flat affine connections , Journal of Geometry , vol:53, issue:no 1-2, 1995, pages:89-99, ISSN (print):0047-2468, ISSN (online):1420-8997, doi:https://doi.org/10.1007/BF01224043, Ref
|
1995
|
|
79
|
G. Ganchev, S. Ivanov, Semi-symmetric W-metric connections and the W-conformal group, Годишник на ФМИ на СУ, vol:81, 1994, pages:181-193, Ref
|
1994
|
|
80
|
G. Ganchev, S. Ivanov, V. Mihova, Hermitian sectional curvatures on Hermitian manifolds, Internal Report, ICTP, Miramare - Trieste, vol:40, 1991, pages:1-33, Ref
|
1991
|
| Статия в поредица |
|
1
|
Stefan Ivanov, Nikola Stanchev, The Riemannian Bianchi identities of metric connections with skew torsion and generalized Ricci solitons, arXiv:2307.03986, 2023, PhD
|
2023
|
|
2
|
Stefan Ivanov, Nikola Stanchev, The Riemannian curvature identities of a G2 connection with skew-symmetric torsion and generalized Ricci solitons, arXiv:2307.05619, 2023, PhD
|
2023
|
| Статия в сборник (на конференция и др.) |
|
1
|
S. Ivanov, Z. Kiss'ovski, Optimization of Electrothermal Microwave Plasma Thruster for Nanosatellites, The 36th International Electric Propulsion Conference, 2019
|
2019
|
|
2
|
Stefan Ivanov, Ivan Minchev, Simeon Zamkovoy, Twistor and reflector spaces of almost
para-quaternionic manifolds, Handbook of pseudo-Riemannian geometry and supersymmetry. Papers based on the 77th meeting Encounter between mathematicians and theoretical physicists Strasbourg, France, editor/s:Cortes, Vicente , Publisher:European Mathematical Society. IRMA Lectures in Mathematics and Theoretical Physics, 2010, pages:477-496, ISBN:978-3-03719-079-1, Ref
|
2010
|
|
3
|
P. Yaneva, S. Ivanov, Elements of Old and New Testament Theology of Light in the Extant Copy of King Symeon’s Florilegium (Miscellany): the Izbornik of 1073 and its Greek Original, Slavia Orthodoxa. Език и култура. София, издателство:Универ. изд. “Св. Кл. Охридски”, 2003, стр.:165-170
|
2003
|
| Студия в научно списание |
|
1
|
Ivanov, Stefan, Minchev, Ivan, Vassilev, Dimiter, Non-Umbilical Quaternionic Contact Hypersurfaces in Hyper-Kahler Manifolds, INTERNATIONAL MATHEMATICS RESEARCH NOTICES, vol:2019, issue:18, 2019, pages:5649-5673, ISSN (print):1073-7928, ISSN (online):1687-0247, doi:10.1093/imrn/rnx279
|
2019
|
|
2
|
Ivanov, Stefan, Minchev, Ivan, Vassilev, Dimiter, Quaternionic contact hypersurfaces in hyper-Kahler manifolds, ANNALI DI MATEMATICA PURA ED APPLICATA, vol:196, issue:1, 2017, pages:245-267, ISSN (print):0373-3114, ISSN (online):1618-1891, doi:10.1007/s10231-016-0571-x
|
2017
|
| Участие в конференция |
|
1
|
Присъствие, Стефан Иванов, Heterotic Supersymmetry, Strominger System and Equations of Motion
|
2024
|
|
2
|
Присъствие, Стефан Иванов, The Riemannian curvature identities on almost Calabi-Yau with torsion 6-manifold and generalized Ricci solitons
|
2024
|
|
3
|
Присъствие, Стефан Иванов, The Riemannian curvature identities on almost Calabi-Yau with torsion 6-manifold and generalized Ricci solitons
|
2024
|
|
4
|
Присъствие, Стефан Иванов, Almost Calabi-Yau with torsion 6-manifold, curvature and generalized Ricci solitons
|
2024
|
|
5
|
Присъствие, Стефан Иванов, Solutions to the quaternionic contact Yamabe equation on the 3-Sasakian spaces and the qc Yamabe problem
|
2023
|
|
6
|
Присъствие, Стефан Иванов, Solutions to the qc-Yamabe Equation on the Quaternionic Sphere and 3-Sasakian Spaces
|
2023
|
|
7
|
Присъствие, Стефан Иванов, Solutions to the quaternionic contact Yamabe equation on the 3-Sasakian spaces and the qc Yamabe problem
|
2023
|
|
8
|
Присъствие, Стефан Иванов, The CR Almost Schur Lemma and the positivity conditions
|
2023
|
|
9
|
Присъствие, Стефан Иванов, Solution of the qc Yamabe equation on a 3-Sasakian manifold and the quaternionic Heisenberg group
|
2023
|
|
10
|
Присъствие, Стефан Иванов, Quaternionic Heisenberg group and solutions to Strominger system in small dimensions
|
2023
|
|
11
|
Присъствие, Стефан Иванов, Para-Sasaki-like Riemannian manifolds and new Einstein metrics
|
2022
|
|
12
|
Присъствие, Стефан Иванов, The CR almost Schure lemma and the positivity conditions
|
2022
|
|
13
|
Присъствие, Стефан Иванов, Solution of the qc Yamabe equation on a 3-Sasakian manifold, extremals of the Sobolev-Folland-Stein
inequality on the quaternionic Heisenberg groups and the qc Yamabe problem
|
2022
|
|
14
|
Присъствие, Стефан Иванов, Solution of the qc Yamabe equation on a 3-Sasakian manifold, extremals of the Sobolev-Folland-Stein
inequality on the quaternionic Heisenberg groups and the qc Yamabe problem
|
2022
|
|
15
|
Присъствие, Стефан Иванов, The CR almost Schur lemma and the positivity conditions
|
2022
|
|
16
|
Присъствие, Стефан Иванов, Не-симетрична Риманова гравитация и Сасаки-Айнщайнови 5-мерни многообразия
|
2021
|
|
17
|
Присъствие, Стефан Иванов, HETEROTIC SUPERSYMMETRY, ANOMALY CANCELLATION AND EQUATIONS OF MOTION
|
2021
|
|
18
|
Присъствие, Стефан Иванов, HETEROTIC SUPERSYMMETRY, ANOMALY CANCELLATION AND EQUATIONS OF MOTION
|
2021
|
|
19
|
Присъствие, Стефан Иванов, Solutions of the qc Yamabe equation on a 3-Sasakoan manifold, extremals of the Sobolev-Folland-Steun inequality on the quaternionic Heisenberg group and the qc Yamabe problem
|
2021
|
|
20
|
Присъствие, Стефан Иванов, Сасаки-Айинщаинови и 3-Сасакиеви многообразия в размерност 7
|
2020
|
|
21
|
Присъствие, Стефан Иванов, Quaternionic Heisenberg group and solutions to the Strominger system in small dimensions
|
2019
|
|
22
|
Секционен доклад, Стефан Иванов, Хетеротични струни, суперсиметрии и геометрии
|
2019
|
|
23
|
Присъствие, Стефан Иванов, Quaternionic Heisenberg group and solutions to the Strominger system with non-constant dilaton in small dimensions
|
2019
|
|
24
|
Присъствие, Стефан Иванов, Heterotic supersymmetry and equations of motion
|
2019
|
|
25
|
Секционен доклад, Стефан Иванов, On the CR Obata theorem
|
2019
|
|
26
|
Присъствие, Стефан Иванов, Хетеротонични суперсиметрии и уравнения на движението
|
2019
|
|
27
|
Секционен доклад, Стефан Иванов, Non
-
existence of 3
-
Sasakian structure on Sasaki Einstein 7
manifolds
|
2018
|
|
28
|
Секционен доклад, Стефан Иванов, Non
-
existence of 3
-
Sasakian structure on Sasaki Einstein 7
manifolds
|
2018
|
|
29
|
Секционен доклад, Стефан Иванов, Quaternionic Heisenberg group and Solutions to Strominger system with non-constant dilaton in dimensions 7, 6 and 5
|
2018
|
|
30
|
Секционен доклад, Стефан Иванов, Тhe Yamabe Equation on 3-Sasakian
Manifolds
|
2017
|
|
31
|
Секционен доклад, Стефан Иванов, Quaternionic Heisenberg group and Heterotic String Solutions with non-constant dilaton in dimensions 7 and 5
|
2017
|
|
32
|
Секционен доклад, Стефан Иванов, Connections in generalized (non-symmetric) Riemannian geometry
|
2017
|
|
33
|
Секционен доклад, Стефан Иванов, Solution of the qc Yamabe Equation on a 3-Sasakian Manifold and Extremals of the Sobolev-Folland-Stein Inequality on the Quaternionic Heisenberg Groups
|
2016
|
|
34
|
Секционен доклад, Стефан Иванов, Quaternionic Heisenberg group and Solutions to Strominger system with
non-constant dilaton
|
2016
|
|
35
|
Секционен доклад, Стефан Иванов, Solution of the qc Yamabe equation on a 3-Sasakian manifold and extremals of the Sobolev-Folland-Stein inequality on the quaternionic Heisenberg group
|
2016
|
|
36
|
Секционен доклад, Стефан Иванов, Суперсиметрични струни, геометрии, решения
|
2015
|
|
37
|
Секционен доклад, Стефан Иванов, Quaternionic Heisenberg group and Solutions to Strominger system with
non-constant dilaton
|
2015
|
|
38
|
Секционен доклад, Стефан Иванов, Quaternionic Heisenberg group and Solutions to Strominger system with
non-constant dilaton
|
2015
|
|
39
|
Секционен доклад, Стефан Иванов, The Lichnerowicz-Obata sphere theorems on a quaternionic contact manifold
|
2014
|
|
40
|
Секционен доклад, Стефан Иванов, The Lichnerowicz-Obata sphere theorems on a quaternionic contact manifold
|
2014
|
|
41
|
Секционен доклад, Стефан Иванов, Heterotic supersymmetry, anomaly cancellation and equations of motion
|
2013
|
|
42
|
Секционен доклад, Стефан Иванов, The Obata sphere theorems on a quaternionic contact menifold of dimension bigger thah seven
|
2013
|
|
43
|
Секционен доклад, Стефан Иванов, СУПЕР СИМЕТРИЧНИ СТРУНИ И СПЕЦИАЛНИ ХОЛОНОМИИ
|
2013
|
|
44
|
Секционен доклад, Стефан Иванов, Кватернионно-контактни структури и кк-конформен тензор на кривината
|
2013
|
|
45
|
Секционен доклад, Стефан Иванов, The Obata sphere theorems on a quaternionic contact menifold of dimension bigger thah seven
|
2013
|
|
46
|
Секционен доклад, Стефан Иванов, Extremals for the Sobolev-Folland-Stein inequality on the quaternionic
Heisenberg qroup, the qc Yamabe problem and related geometric structures
|
2012
|
|
47
|
Секционен доклад, Стефан Иванов, The sharp lower bound of the first eigenvalue of the sub-Laplacian on quaternionic contact manifold
|
2012
|
|
48
|
Секционен доклад, Стефан Иванов, Екстремали на неравенството на Соболев-Фоланд-Щайн, кватернионно-
контактен проблем на Ямабе и съответни геометрични структури
|
2012
|
|
49
|
Секционен доклад, Stefan Ivanov, Extremals of the Sobolev-Folland-Stein inequality
|
2011
|
|
50
|
Секционен доклад, Stefan Ivanov, Extremals of the Sobolev-Folland-Stein inequality,quaterionic contact geometry
|
2011
|
|
51
|
Секционен доклад, Stefan Ivanov, Extremals of the Folland-Stein inequality on the 3-Sasakina sphere
|
2011
|
|
52
|
Секционен доклад, Stefan Ivanov, Extremals for the Sobolev inequality on the quaternionic Heisenberg group
and the quaternionic contact Yamabe problem
|
2010
|
| Участие в редколегия |
|
1
|
Стефан Иванов, Доклади Бан - математика, Участие в редколегия
|
2022
|
|
2
|
Стефан Иванов, matematics, Участие в редколегия
|
2021
|
|
3
|
Стефан Иванов, International Electronic Journal of Geometry, Участие в редколегия
|
2019
|
|
4
|
Стефан Иванов, Годишник на Софийския Университет, математика, Участие в редколегия
|
2013
|
|
5
|
Stefan Ivanov, International Journal of Differential geometry , Участие в редколегия
|
2010
|
|