ALEXANDRU CONSTANTINESCU

CURRENT TEACHING

CURRICULUM VITAE

	ALEXANDRU CONSTANTINESCU
	Born in 1981 in Bucharest Romanian and German citizen Married, two daughters
Education	German Habilitation for Mathematics from the Freie Universität Berlin (2020) Thesis: Hilbert Functions: a connection between algebra, geometry and combinatorics (pdf)
	Ph.D. in Mathematics from the University of Genova (2009) Thesis: Combinatorical Structures, Lefschetz Properties, and Parametrizations of Algebras (pdf) Advisor: Aldo Conca
	Bachelor's degree in Mathematics from the University of Bucharest (2004) Thesis: The Birational Classification of Smooth Projective Surfaces Advisor: Paltin Ionescu
Employment	Freie Universität Berlin	guest professor	since 2019
	Freie Universität Berlin	BMS-subsitute professor	2018
	Università di Genova	INdAM-Marie Curie fellow	2016-2018
	Freie Universität Berlin	postdoc	2013-2016
	Univeristé de Neucâtel	postdoc	2012-2013
	Universität Basel	postdoc	2010-2012
	Università di Genova	assegnista di ricerca	2009-2010
	Insitutul de Matematica al Academiei Române	research assistant	since 2006, currently on leave
Publication record	18 published papers, 1 submitted paper, 2 in preparation.
Some coauthors	Klaus Altmann, Bruno Benedetti, Giulio Caviglia, Emanuela DeNegri, Matej Filip, Elisa Gorla, Joachim Jelisiejew, Thomas Kahle, Nam Le Dinh, Matey Mateev, Matteo Varbaro
Research interests	Hilbert schemes of points deformation theory Gröbner bases Stanley-Reisner rings toric geometry free resolutions Castelnuovo-Mumford regularity arithmetic rank Hilbert functions algebras with straightening laws vertex cover algebras simplicial and polytopal complexes matroids h-vectors & f-vectors pure O-sequences Gorenstein liaison Lefschetz properties balanced simplicial complexes Coxeter groups		Languages Romanian ⋆ ⋆ ⋆ ⋆ ⋆+ English ⋆ ⋆ ⋆ ⋆ ⋆ German ⋆ ⋆ ⋆ ⋆ ⋆ Italian ⋆ ⋆ ⋆ ⋆ French ⋆ ⋆ ⋆

PUBLICATIONS

1. Altmann K., Constantinescu A., Filip M., Polyhedra, Lattice Structures, and Extensions of Semigroups (pdf)
   Journal of the London Mathematical society vol 106 (4), pp. 3938—4008, (2022).
   
   
2. Altmann K., Constantinescu A., Filip M., Versality in Toric Geometry (pdf)
   Journal of Algebra, vol. 609, pp. 1—43, (2022)
   
   
3. Constantinescu A., De Negri E., Varbaro M. Singularities and Radical Initial Ideals (pdf)
   Bulletin of the London Mathematical Society, vol. 52 (4). pp. 674—686, (2020)
   
   
4. Constantinescu A., Kahle T., Varbaro M., Linear Syzygies, Hyperbolic Coxeter Groups, and Regularity (pdf)
   Compositio Mathematica, vol. 502, Issue 6, pp. 1076—1097, (2019)
   
   
5. Constantinescu A., Gorla E., Gorenstein Liaison for Toric Ideals of Graphs (pdf)
   Journal of Algebra, vol. 502, pp. 249—261, (2018)
   
   
6. Constantinescu A., Varbaro M., h-vectors of matroid complexes (pdf)
   Proceedings of CoMeTA 2013, Springer INdAM series, pp. 203—227, (2015)
   
   
7. Constantinescu A., Kahle T., Varbaro M., Linear syzygies, flag complexes, and regularity (pdf)
   Collectanea Mathematica, pp. 1—6, doi: 10.1007/s13348-015-0141-3 (2015)
   
   
8. Constantinescu A., Mateev M., Hilbert Functions of Standard Determinantal Varieties (pdf)
   Journal of Pure and Applied Algebra, 219, pp. 3873—3888, (2015)
   
   
9. Constantinescu A., Pournaki M.R., Seyed Fakhari S.A., Terai N., Yassemi S.
   Cohen-Macaulayness and Limit Behaviour of Depth for Powers of Cover Ideals (pdf)
   Communications in Algebra, 43, No. 1, pp. 143—157 (2015)
   
   
10. Constantinescu A., Kahle T., Varbaro M., Generic and special constructions of pure O-sequences (pdf)
    Bulletin of the London Mathematical Society, vol 46, (5). pp. 924—942, (2014)
    
    
11. Caviglia G., Constantinescu A., Varbaro M., Note on a conjecture by Kalai (pdf)
    Israel Journal of Mathematics, 0021—2172, pp. 1—7, (2014)
    
    
12. Constantinescu A., Varbaro M., On the h-vectors of Cohen-Macaulay Flag Complexes (pdf)
    Mathematica Scandinavica, vol. 112, issue 1, pp. 87—111, (2013)
    
    
13. Constantinescu A., Veronese Algebras and Modules of Rings with Straightening Laws (pdf)
    Journal of Commutative Algebra, vol. IV, issue 2, pp. 229—254, (2012)
    
    
14. Constantinescu A., Parametrizations of Ideals of k[x; y] and k[x; y; z] (pdf)
    Journal of Algebra, vol. 346, issue 1,  pp. 1—30, (2011)
    
    
15. Constantinescu A., Varbaro M., Koszulness, Krull Dimension and Other Properties of Graph-Related Algebras (pdf)
    Journal of Algebraic Combinatorics, vol. 34, issue 3, pp. 375—400, (2011)
    
    
16. Constantinescu A., Le Dinh N., The Standard Graded Property for Vertex Cover Algebras of Quasi-Trees (pdf)
    Le Matematiche, vol. LXIII, issue II, pp. 173—183, (2008)
    
    
17. Benedetti B., Constantinescu A., Varbaro M.,
    Dimension, Depth and Zero-Divisors of the Algebra of Basic k-Covers of a Graph (pdf)
    Le Matematiche, vol. LXIII, issue II, pp. 117—156, (2008)
    
    
18. Constantinescu A., Hilbert Function and Betti Numbers of Algebras with Lefschetz Property of Order m (pdf)
    Communications in Algebra, vol. 36, issue 12, pp. 4704—4720, (2008)
    
    

PREPRINTS

19. Constantinescu A., Bitsch W., Cotangent Cohomology for Matroids (pdf)
    arXiv:2204.05777

IN PREPARATION

20. Constantinescu A., Deliu D., Jelisiejew J., Extension Algebras and the Hilbert Scheme of Points in the Plane
    
    
21. Constantinescu A., Rossi M.E., Tozzo L., Matlis Duality and Gorenstein Linkage of Points in 3-space