English Version


Data si locul nasterii: 14.07.1960, Bucuresti.

Studii: Facultatea de Matematica, Universitatea din Bucuresti (licenta 1984, specializare in algebra-geometrie 1985).
Doctorat: 1993, Universitatea din Bucuresti, cu teza "Structuri geometrice pe varietati complexe. Structuri local conform Kaehler" (indrumator Prof.dr. S. Ianus).
Pozitii academice: Asistent (1990-1995), Lector (1995-2000), Conferentiar (2000-2004), profesor (2004-prezent).
Pozitii de cercetare: Cerc. st. I la Institutul de Matematica "Simion Stoilow" al Academiei Romane (2007-prezent).
Cursuri predate la Facultatea de Matematica si la SNSB: Geometrie, Geometrie diferentiala, Topologie algebrica, Calcul variational in geometria riemanniana, Geometrie simplectica, Geometrie complexa, Concepte algebrice in geometrie.
Profesor/cercetator vizitator: "Max Planck" Inst. (Bonn), Ecole Polytechnique (Paris), ICTP (Trieste), "Erwin Schroedinger" Inst. (Viena), University of New Mexico (Albuquerque), Univ. din Roma "La Sapienza", Ecole Polytechnique Federale de Lausanne, Tokyo Metropolitan Univ. etc.
Domeniul de cercetare: Geometria diferentiala.
Premiul "Gheorghe Titeica" al Academiei Romane in 1998 pentru cartea "Locally conformal Kaehler geometry" (Birkhauser).


 Pentru informatii complete: pagina personala

Carti si manuale

  1. Curbe si suprafete diferentiabile (culegere de probleme), Ed. Universitatii Bucuresti, 1995.
  2. Locally conformal Kähler geometry, Progress in Math. 155, Birkhuäser, (1998) (cu Sorin Dragomir). MR99a:53081.
  3. O introducere in geometrie. Fundatia Theta 2000 (cu Adriana Turtoi). Zbl 1033.51001.

Articole stiintifice

  1. Conformally Einstein Products and Nearly Kaehler Manifolds (impreuna cu Andrei Moroianu). Annals of Global Analysis and Geometry 33(2008), 11-18.
  2. Embeddings of compact Sasakian manifolds (impreuna cu Misha Verbitsky). Mathematical Research Letters, 14 (2007), 703-710.
  3. Einstein-Weyl structures on complex manifolds and conformal version of Monge-Ampere equation (impreuna cu Misha Verbitsky). Bull. Math. Soc. Sci. Math. Roumanie Tome 51(99) No.4, 2008, 339-353.
  4. Sasakian structures on CR-manifolds (impreuna cu Misha Verbitsky). Geometriae Dedicata 125 (2007), 159-173.
  5. Constructions in Sasakian Geometry (impreuna cu Charles P. Boyer, Krzysztof Galicki). Mathematische Zeitschrift 257 (2007), 907-924.
  6. Locally conformal Kaehler manifolds with potential (impreuna cu Misha Verbitsky). Va aparea in Mathematische Annalen.
  7. Vaisman reduction in complex and quaternionic geometry (impreuna cu R.Gini, M.Parton si P.Piccinni). Journal of Geometry and Physics, 56 (2006), 2501-2522.
  8. CR-submanifolds. A class of examples. Revue roumaine de math. pures appl. 51 (2006) 77-85.
  9. Locally conformally Kaehler manifolds. A selection of results. Lecture Notes of Seminario Interdisciplinare di Matematica, 4(2005), 121-152. MR2007c:53101.
  10. Non-zero contact and Sasakian reduction (impreuna cu O.Dragulete), Differential Geometry and its Applications 24 (2006), 260-270. MR2007e:53111.
  11. Harmonicity and minimality of vector fields and distributions on locally conformal Kaehler and hyperkaehler manifolds (impreuna cu L.Vanhecke), Bull. of the Belgian Math. Soc. "Simon Stevin" 12 (2005) 543-555. MR2007d:53106.
  12. An immersion theorem for Vaisman manifolds (impreuna cu M.Verbitsky), Mathematische Annalen 332 (2005), 121-143. MR2006e:53112.
  13. Locally conformal Kaehler reduction (impreuna cu R. Gini and M. Parton). Crelle Journal fuer die Reine und Angewandte Mathematik 581 (2005), 1-21. MR2006c:53077.
  14. Geometric flow on compact locally conformally Kaehler manifolds (impreuna cu Y.Kamishima). Tohoku Math. J. 57 (2) (2005), 201-221. MR2006g:53112.
  15. Eigenvalue estimates for the Dirac operator and harmonic 1-forms of constant length (impreuna cu A.Moroianu). Comptes Rendus Acad. Sci. Paris, 338 (2004), 561-564. MR2005f:58054.
  16. Structure theorem for compact Vaisman manifolds, Mathematical Research Letters, 10 (2003), 799-805 (impreuna cu M. Verbitsky). Also available at math.DG/0305259. MR2004j:53093).
  17. Potential 1-forms for hyper-Kaehler structures with torsion, Classical and Quantum Gravity 20 (2003), 1845-1856 (impreuna cu Y.S Poon si A.Swann). MR2004e:53070.
  18. Cosphere bundle reduction in contact geometry, Journal of symplectic geometry, 1(4) (2002), 695-714. (impreuna cu O.Dragulete si T.S.Ratiu) MR2004m:53141.
  19. Weyl structures in quaternionic geometry. A state of the art. Barletta, Elisabetta (ed.), Selected topics in geometry and mathematical physics. Vol.I. Potenza: Univ. degli Studi della Basilicata, Dipartimento di Matematica, Seminario Interdisciplinare di Matematica, 43-80 (2001). Zbl 1029.53055
  20. Cayley 4-frames and a quaternion Kaehler reduction related to Spin(7), Global differential geometry: the mathematical legacy of Alfred Gray (Bilbao 2000), 401-405, Contemporary Mathematics 288, Amer. Math. Soc. Providence, RI, 2001 (impreuna cu Paolo Piccinni). MR 2003c:53072.
  21. Reduction of Sasakian manifolds, Journal of Mathematical Physics 48 (2001), 3809-3816 (impreuna cu G.Grantcharov) MR 2002e:53060.
  22. Local almost contact metric 3-structures, Publicationes Mathematicae (Debrecen) 57 (2000) 499-508 (impreuna cu Paola Matzeu) MR 2002a:53057.
  23. Complex structures on some Stiefel manifolds, Bull. Math. Soc. Sci. Math. Roumanie (N.S.) 49 (2000) (impreuna cu Paolo Piccinni) MR 2002c:53120.
  24. On some moment maps and induced Hopf bundles in the quaternionic projective space, International Journal of Mathematics 11 (2000), 925-942 (impreuna cu Paolo Piccinni) MR 2002a:53061.
  25. Intersections of Riemannian submanifolds. Variations on a theme by T.J.Frankel, Rendiconti di Matematica (Roma), 19 (1999), 107-121 (impreuna cu T.Bingh si L.Tamassy) MR 2000g:53074.
  26. Locally conformal Kaehler metrics on Hopf surfaces, Annales de l'Institut Fourier, 48 (1998), 1107-1127 (impreuna cu P.Gauduchon) MR 2000g:53088.
  27. Compact hyperhermitian-Weyl and quaternion Hermitian-Weyl manifolds, Annals of Global Analysis and Geometry, 16 (1998), 383-398. (impreuna cu P.Piccinni). MR 99k:53097; Erratum, idem, 18 (2000), 105-106. MR 2000k:53044.
  28. An example of an almost hyperbolic Hermitian manifold, International Journal of Mathematics and Mathematical Sciences, 21 (1998), 613-618 (impreuna cu C.-L.Bejan). MR 98m:53039.
  29. Locally conformal Kaehler structures in quaternionic geometry, Transactions of the American Mathematical Society, 349 (1997), 641-655, (impreuna cu P.Piccinni). MR 97e:53091.
  30. Induced Hopf bundles and Einstein metrics, in New developments in differential geometry, Budapest (1996), 295-306, Kluwer (impreuna cu P.Piccinni). MR 99k:53099.
  31. Weyl structures on quaternionic manifolds, Proceedings of the Meeting on Quaternionic Structures in Mathematics and Physics, Trieste 1994. SISSA, Trieste, (1996), 261-267, (impreuna cu P.Piccinni). MR 99k:53098.
  32. Holomorphic and harmonic maps on locally conformal Kaehler manifolds, Bolletino dell'Unione Matematica Italiana, (7)9-A(1995), 569-579, (impreuna cu S.Ianus, V.Vuletescu), MR 96i:58037.
  33. Conformal geometry of Riemannian submanifolds. Gauss, Codazzi and Ricci equations, Rendiconti di Matematica (Roma), 15, (1995), 233-249, (impreuna cu G.Romani). Zbl. 833:53015.
  34. Extrinsic spheres of a generalized Hopf manifold. Publ. Math. Debrecen 44 (1994), 189-200 (impreuna cu S.Ianus, K.Matsumoto). MR94m:53080.
  35. Locally conformal Kaehler manifolds. A survey, Quaderno n. 12, Dip. di Mat., Univ. di Roma "La Sapienza", (1994).
  36. The fundamental equations of conformal submersions, Beitrage zur Algebra und Geometrie / Contributions to Algebra and Geometry, 34, (1993), 233-243, (impreuna cu G.Romani), MR 95a:53055.
  37. Submanifolds with parallel second fundamental form in a generalized Hopf manifold, Ricerche di Matematica (Napoli), XLII, (1993), 3-9, MR 95d:35066.
  38. Immersions spheriques dans une variete de Hopf generalisee, Comptes Rendus de l' Acad. Sci. Paris, 316, (1993), 63-66, (impreuna cu S.Ianus, K.Matsumoto), MR 93m:53067.
  39. A theorem on nonnegatively curved locally conformal Kaehler manifolds, Rendiconti di Matematica (Roma), serie VII, 12, (1992), 257-262, MR 93h:53071.
  40. A certain symmetric F-connection in locally conformal Kaehler manifolds. Bull. Yamagata Univ. Natur. Sci. 12 (1991), no.4, 299-306 (impreuna cu S.Ianus, K.Matsumoto). MR92a:53026.
  41. A class of antiinvariant submanifolds of a generalized Hopf manifold, Bull. Math. de la Soc. Sci. Math. de Roumanie, 34, (1990), 115-123, (impreuna cu S.Ianus), MR 91m:53039.
  42. Minimal real hypersurfaces of a generalized Hopf manifold, Analele St. Univ. "Al. I. Cuza" Iasi, 2, (1990), 137-142, MR 92i:53019.
  43. Complex hypersurfaces with planar geodesics in generalized Hopf manifolds, Mathematika Balkanica 3 (1989) 92-96, MR 90g:53072.
  44. Complex hypersurfaces of a generalized Hopf manifold, Publications de l'Inst. Math. (Beograd), 42, (1987), 123-129, (impreuna cu S.Ianus, K.Matsumoto) MR 89f:53079.
  45. On certain vector fields in locally conformal Kaehler manifolds, Bull. Yamagata Univ. Natur. Sci. 11 (1987), 335--344 (impreuna cu S.Ianus, K.Matsumoto). MR88b:53077.
  46. CR-submanifolds of a locally conformal Kaehler manifold, Demonstratio Mathematica, 19, (1986), 863-869, MR 90g:53072.
  47. Subvarietati CR-generice in S-varietati, Stud. Cerc. Mat. 36 (1984), 435-443. MR86j:53084.



Actualizat: 29 iulie 2007


Prof.dr. Dascalescu Sorin

  


Data si locul nasterii: Nascut la 23 Aprilie 1964 in Ploiesti.

Educatia: A absolvit Facultatea de Matematica, Universitatea Bucuresti in 1988.
Functiile didactice: profesor la Liceul Colorom Codlea intre 1988-1990, asistent intre 1990-1995, lector intre 1995-1999, conferentiar intre 1999-2001 iar din 2001 este Profesor la Facultatea de Matematica si Informatica, Universitatea Bucuresti.
Teza de doctorat: A sustinut doctoratul in 1992 cu teza ''Inele Graduate de Suport Finit''.
Cursuri predate: A tinut cursuri Algebre Hopf, Inele graduate si teorie Clifford, Algebra (I si II), Reprezentari de algebre, Algebre si coalgebre.
Domenii de cercetare: Algebre Hopf, Teoria Inelelor, Grupuri Cuantice.

Este recenzent la Zentralblatt fur Mathematik si Mathematical Reviews.
A obtinut Premiul "Gheorghe Lazar" al Academiei Romane, pentru anul 1996.

Carti si manuale

  1. Hopf algebras: an introduction, Monographs in Pure and Applied Mathematics 235(2000), Marcel Dekker, New York, 401 pag (cu C.Nastasescu si S.Raianu)
  2. Algebre Hopf, Editura Universitatii Bucuresti, 1998, 140 pag. (cu C.Nastasescu si S.Raianu).
  3. Probleme de algebra, Editura Universitatii Bucuresti, 1993, 100 pag., (cu C.Baetica).

Articole stiintifice

  1. Graded T-rings, Comm. Algebra, 17, 1989, p.3033-3042 (cu C.Nastasescu).
  2. The equation xn=a in left cancellative monoids, Rivista di Matematica Pura ed. Appl., Udine, 9, 1991, p.95-115 (cu C.Nastasescu).
  3. Some results on graded rings of finite support, Proc. of the Algebra Conf., Babes-Bolyai University, Faculty of Mathematics and Computer Science Research Seminars no.1, 1992, p.131-136.
  4. A note on groups with the finite embedding property, Proc. of the Int. Conf. on Group Theory, Timisoara, 1992, p.43-45.
  5. Graded semiperfect rings, Bull. de la Soc. Sci. Math. Roumaine, 36, 1992, p.247-255.
  6. Graded T-rings with finite support, Comm. Algebra, 21, 1993, p.3619-3636, (cu A. del Rio).
  7. A Maschke-type theorem for crossed coproducts, Annals of the Ovidius University of Constanta, 2, 1994, p.44-51 (cu S.Caenepeel si S.Raianu).
  8. A note on intermediate normalizing extensions, Bull.of the Austral. Math. Soc., 50, 1994, p.313-316 (cu L. Van Wyk).
  9. A note on graded semilocal rings, Revue Roumaine de Math. Pures et Appl., 40, 1995, p.253-258 (cu M.Beattie si C.Nastasescu).
  10. Graded coalgebras and Morita-Takeuchi contexts, Tsukuba J. Math., 19, 1995, p.395-407 (cu C.Nastasescu, S.Raianu si F. Van Oystaeyen).
  11. Finite Hopf-Galois coextensions, crossed coproducts and duality, J. Algebra 178, 1995, p.400-413 (cu S.Raianu si Y.H. Zhang).
  12. Cosemisimple Hopf algebras coacting on coalgebras, Comm. Algebra, 24, 1996, p.1649-1678 (cu S.Caenepeel si S.Raianu).
  13. Gradings of finite support. Applications to injective objects, J. Pure Appl. Algebra, 107, 1996, p.193-206 (cu C.Nastasescu, A. del Rio si F. Van Oystaeyen).
  14. Categories of modules graded by G-sets. Applications, J. Pure Appl. Algebra 107, 1996, p.129-139 (cu M.Beattie).
  15. Do isomorphic structural matrix rings have isomorphic graphs?, Proc. Amer. Math. Soc., 124, 1996, p.1385-1391 (cu L. Van Wyk).
  16. Crossed coproducts and cleft coextensions, Comm. Algebra 24, 1996, p.1229-1243 (cu G.Militaru si S.Raianu).
  17. Coalgebra deformations of bialgebras by Harrison cocycles, Bull. Belgian Math. Soc. 4(1997), 647-672 (cu S.Caenepeel, G.Militaru si F.Panaite).
  18. Some Remarks on a theorem of H.-J. Schneider, Comm. Algebra 24 (1996), p.4477-4493 (cu S.Raianu si F. Van Oystaeyen).
  19. Comodules graded by G-sets. Applications, Comm. Algebra 25 (1997), p.159-175 (cu C.Nastasescu, B.Torrecillas si F. Van Oystaeyen).
  20. Duality theorems for graded algebras and coalgebras, J. Algebra 192 (1997), p.261-276, (cu C.Nastasescu, B.Torrecillas si F. Van Oystaeyen).
  21. Galois Extensions for Co-Frobenius Hopf Algebras, J. Algebra 198 (1997), p.164-183, (cu M.Beattie si S.Raianu).
  22. Modules Graded By G-Sets. Duality And Finiteness Conditions, J. Algebra 195 (1997), p.624-633, (cu D.Bulacu si L.Grünenfelder).
  23. Comodules graded by G-sets. Applications, Comm. Algebra 25 (1997), p.159-175, (cu C.Nastasescu, B.Torrecillas si F. Van Oystaeyen).
  24. FBN Hopf Module Algebras, Comm. Algebra 25 (1997), p.3521-3529, (cu A.V. Kelarev si B.Torrecillas).
  25. Pointed Hopf algebras of dimension p3, J. Algebra 209 (1998), p.622-634, (cu S.Caenepeel).
  26. Finiteness Conditions, Co-Frobenius Hopf Algebras and Quantum Groups, J. Algebra 200 (1998), p.312-333, (cu M.Beattie, L.Grünenfelder si C.Nastasescu).
  27. On pointed Hopf algebras of dimension 2n, Bull. London Math. Soc. 31 (1999), p.17-24, (cu S.Caenepeel).
  28. On the number of types of finite dimensional Hopf algebras, Inventiones Math. 136 (1999), p.1-7, (cu M.Beattie si L.Grünenfelder).
  29. Classifying pointed Hopf algebras of dimension 16, Comm. Algebra 28 (2000), p.541-568 (cu S.Caenepeel si S.Raianu).
  30. On pointed Hopf algebras of dimension pn, Proc. Amer. Math. Soc. 128 (2000), p.361-367, (cu M.Beattie si L.Grünenfelder).
  31. Yang-Baxter operators arising from (co)algebra structures, Comm. Algebra 27 (1999), p.5833-5845, (cu F.Nichita).
  32. Group gradings on full matrix rings, J. Algebra 220 (1999), p.709-728 (cu B.Ion, C.Nastasescu si J.Rios).
  33. Pointed Hopf algebras with large coradical, Comm. Algebra 27 (1999), p.4821-4826, (cu S.Dascalescu).
  34. Forms of Hopf algebras, Manuscripta Math. 100 (1999), p.35-53, (cu S.Caenepeel si L. Le Bruyn).
  35. A co-Frobenius Hopf algebra with a separable Galois extension is finite, Proc. Amer. Math. Soc. 128(2000), 3201-3203 (cu M.Beattie si S.Raianu).
  36. Constructing pointed Hopf algebras by Ore extensions, J. Algebra 225 (2000), p.743-770, (cu M.Beattie si L.Grünenfelder).
  37. Co-Frobenius Hopf algebras: integrals, Doi-Koppinen modules and injective objects, J. Algebra 220 (1999), p.542-560, (cu C.Nastasescu si B.Torrecillas).
  38. The categories of Yetter-Drinfel'd modules, Doi-Hopf modules and two-sided two-cosided Hopf modules, Applied Categorical Structures 6 (1998), p.223-237, (cu M.Beattie, S.Raianu si F. Van Oystaeyen).
  39. Smash (Co)-products from adjunctions, "Rings, Hopf algebras and Brauer Groups", Marcel Dekker Lecture Notes, 197 (1998), p.103-110, (cu S.Raianu si F. Van Oystaeyen).
  40. Strongly graded coalgebras and graded crossed coproducts, ''Abelian groups, module theory, and topology'', editors D. Dikranjan si L. Salce, Proceedings of the conference in honour of A. Orsatti, Padua, Italy, Marcel Dekker Lecture Notes 201 (1998), p.131-142, (cu C.Nastasescu si S.Raianu).
  41. Finiteness conditions for semigroup graded modules, Rev. Roumaine Math. Pures. Appl 44 (1999), p.37-50 (cu A.V.Kelarev).
  42. On gradings of matrix algebras by cyclic groups, Comm. Algebra 29 (2001), 5013-5021 (cu C.Boboc).
  43. Homological dimension of coalgebras and crossed coproducts, K-Theory 23 (2001), 53-65 (cu C.Nastasescu si B.Torrecillas).
  44. The recovery of the non-diagonal tile in a tiled triangular matrix ring, Indian J. Math. 42 (2000), 167-173 (cu L.Van Wyk).
  45. Semigroup gradings of upper triangular matrix rings, Rev. Roumaine Math. Pures Appl. 46(2001), 611-615 (cu A.Kelarev si C.Nastasescu).
  46. Semigroup gradings of full matrix rings, Comm. Algebra 29 (2001), 5023-5031 (cu A.Kelarev si L.Van Wyk).
  47. Involutory Hopf algebras with non-zero integral, Bull. London Math. Soc. 34 (2002), 33-36 (cu C.Nastasescu si B.Torrecillas).
  48. On gradings of matrix algebras and descent theory, Comm. Algebra 30 (2002), 5901-5920 (cu S.Caenepeel si C.Nastasescu).
  49. Lifting of Nichols algebras of type B2, Israel J. Math. 132 (2002), 1-28 (cu M.Beattie si S.Raianu).
  50. Co-Frobenius Hopf algebras and the coradical filtration, Mathematische Zeitschrift 243 (2003), 145-154 (cu N.Andruskiewitsch).
  51. Group gradings on M2(k), Bull. Australian Math. Soc. 68 (2003), 285-293 (cu R.Khazal si C.Boboc).
  52. Isomorphism of generalized triangular matrix rings and recovery of tiles, International Journal of Mathematics and Math. Sciences 9 (2003), 533-538 (cu R.Khazal si L.Van Wyk).
  53. Hopf algebras of dimension 14, Journal of the London Math. Soc. 69 (2004), 65-78 (cu M.Beattie).
  54. Quantum lines over non-cocommutative Hopf algebras, J. Algebra 273 (2004), 753-779 (cu C.Calinescu, A.Masuoka si C.Menini).
  55. Some examples of integrals for bialgebras, Hopf algebras, 133-141, Lecture Notes in Pure Appl. Math. 237 (2004), Marcel Dekker.
  56. On associative superalgebras of matrices, Rocky Mountain J. Math. 34 (2004), 585-598 (cu P.Jarvis, A.Kelarev si C.Nastasescu).
  57. Symmetric liftings of quantum linear spaces, Mathematica 46 (69) (2004), 141-147.
  58. Periodic rings with finitely generated underlying group, International Journal of Mathematics and Math. Sciences 36 (2004), 1887-1892 (cu R.Khazal).
  59. Symmetric coalgebras, Journal of Algebra 279 (2004), 326-344 (cu F.Castano Iglesias si C.Nastasescu).
  60. Wide Morita contexts, relative injectivity and equivalence results, Journal of Algebra 284 (2005), 705-736 (cu C.Chifan si C.Nastasescu).
  61. On quantum groups at -1, Algebras and Representation Theory 8 (2005), 11-34 (cu N.Andruskiewitsch).
  62. Good gradings on matrix algebras by finite abelian groups of prime index, Bull. Math. Soc. Sc. Math. Roumanie 49 (2006), 5-11 (cu C.Boboc).
  63. Relative regular objects in categories, Applied Categorical Structures 14 (2006), 567-577 (cu C.Nastasescu, A.Tudorache si L.Daus).
  64. On the dimension of the space of integrals for finite dimensional bialgebras, va aparea in Studia Scientiarum Mathematicarum Hungarica.
  65. Group gradings on M3(k), va aparea in Comm. Algebra (cu C.Boboc).



Actualizat: 31 mai 2007



2002 - 2015 -- Facultatea de Matematica si Informatica, Universitatea din Bucuresti
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