ALEXANDRU CONSTANTINESCU

CURRENT TEACHING

CURRICULUM VITAE

	ALEXANDRU CONSTANTINESCU
	Born in 1981 in Bucharest Romanian and German citizen Married, two daughters
Education	Italian Habilitation as Associate Professor for Algebra and Geometry (2023)
	German Habilitation 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) Advisor: Aldo Conca (Thesis pdf)
	Bachelor in Mathematics from the University of Bucharest (2004) Advisor: Paltin Ionescu
Employment	Politecnico di Milano	associate professor	since April 2025
	Freie Universität Berlin	guest professor	2019-2025
	Freie Universität Berlin	BMS-substitute 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 Matematică al Academiei Române	research assistant	since 2006, currently on leave
Publication record	20 published papers, 2 in preparation.
Some coauthors	Klaus Altmann, Bruno Benedetti, Giulio Caviglia, Emanuela DeNegri, Matej Filip, Elisa Gorla, Joachim Jelisiejew, Thomas Kahle, Patricia Klein, 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. Constantinescu A., Klein P., Nguyen T., Singh A., Venturello L. Simplicial Complexes and Matroids with Vanishing T² (pdf)
   The Electronic Journal of Combinatorics 32 (2), P2.12. (2025)
2. Constantinescu A., Brehm W., The First Cotangent Cohomology Module for Matroids (pdf)
   Journal of Combinatorial Algebra vol. 7, no. 3/4, pp. 327-345, (2023)
3. 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)
   
   
4. Altmann K., Constantinescu A., Filip M., Versality in Toric Geometry (pdf)
   Journal of Algebra, vol. 609, pp. 1--43, (2022)
   
   
5. 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)
   
   
6. Constantinescu A., Kahle T., Varbaro M., Linear Syzygies, Hyperbolic Coxeter Groups, and Regularity (pdf)
   Compositio Mathematica, vol. 502, Issue 6, pp. 1076--1097, (2019)
   
   
7. Constantinescu A., Gorla E., Gorenstein Liaison for Toric Ideals of Graphs (pdf)
   Journal of Algebra, vol. 502, pp. 249--261, (2018)
   
   
8. Constantinescu A., Varbaro M., h-vectors of matroid complexes (pdf)
   Proceedings of CoMeTA 2013, Springer INdAM series, pp. 203--227, (2015)
   
   
9. 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)
   
   
10. Constantinescu A., Mateev M., Hilbert Functions of Standard Determinantal Varieties (pdf)
    Journal of Pure and Applied Algebra, 219, pp. 3873--3888, (2015)
    
    
11. 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)
    
    
12. 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)
    
    
13. Caviglia G., Constantinescu A., Varbaro M., Note on a conjecture by Kalai (pdf)
    Israel Journal of Mathematics, 0021--2172, pp. 1--7, (2014)
    
    
14. Constantinescu A., Varbaro M., On the h-vectors of Cohen-Macaulay Flag Complexes (pdf)
    Mathematica Scandinavica, vol. 112, issue 1, pp. 87--111, (2013)
    
    
15. Constantinescu A., Veronese Algebras and Modules of Rings with Straightening Laws (pdf)
    Journal of Commutative Algebra, vol. IV, issue 2, pp. 229--254, (2012)
    
    
16. 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)
    
    
17. 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)
    
    
18. 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)
    
    
19. 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)
    
    
20. 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)
    
    

IN PREPARATION

21. Constantinescu A., Deliu D., Jelisiejew J., Extension Algebras and the Hilbert Scheme of Points in the Plane
    
    
22. Constantinescu A., The Universal Extension of a Pair of Semigroups