Combinatorial, algebraic, topological methods in algebra and geometry.

(MATAG ) (grant CEx05-D11-11/04.10.05)

Short description of the research project

This project has as main aim to approach actual problems of high-level mathematical research. The branches of mathematics are diversifying and specializing continuously. However, mathematics becomes more and more unitary. This is realized by using structures. The mathematical domains are communicating very well. Algebraic objects get topological structures, geometric objects get algebraic structures, new "mixed" concepts are developping. This project has as characteristic the use of algebraic methods in the study and classification of structures (Hopf algebras, classes of graded algebras, near-rings, moduli spaces etc.), of topological methods in group theory and in the study of families of geometric objects, in the intersection theory in algebraic geometry, in the study of subalgebras of affine algebras, combinatorial and topological methods in the study of standard graded algebras, p-adic analysis, factorization problems.The goal of the present project is to use and develop these methods in the following seven research topics:

1. The Lefschetz Property of some graded standard algebras and algorithms for determining the state polytope for some classes of rings.

2. Homological methods in commutative algebra: MCM module and classes of arithmetical rings.

3. Algebraic and toplogical approaches in group theory and in the study of some moduli spaces.

4. Special classes of Hopf algebras, near-rings and intersection theory on algebraic stacks.

5. Algorithms for determining the Newton polyhedron and classes of MCM modules.

6. p-adic analysis, factorization of polynomial convolutions, constructions of near-rings.

7. Subalgebras of affine algebras, polilogarithms, moduli of some classes of abelian surfaces.

Project coordinator

• Nicolae Manolache, Senior Researcher I in the Institute of Mathematics "Simion Stoilow" of the Romanian Academy

Research team from the Institute of Mathematics ``Simion Stoilow'' of the Romanian Academy

• Nicolae Manolache

• Constantin Nastasescu

• Nicolae Popescu

• Vasile Brinzanescu

• Dorin Mihail Popescu

• Stefan Papadima

• Serban Basarab

• Barbu Berceanu

• Iustin Coanda

• Mircea Eugen Craioveanu

• Mircea Puta

• Razvan Dinu Litcanu

• Cristodor Ionescu

• Mihai Cipu

• Marian Vajaitu

• Nicolae Ciprian Bonciocat

• Tiberiu Dumitrescu

• Florin Panaite

• Marian Aprodu

• Serban Barcanescu

• Adrian Constantinescu

• Nicusor Dan

• Cristian Anghel

• Marius Vladoiu

• Alin Stefan

• Nicolae Buruiana

• Ovidiu Pasarescu

• Gabriel Chiriacescu

• Anca Daniela Macinic

• Dumitru Stamate

• Mircea Cimpoeas

• Mihai Epure

• Mihai Fulger

• Alina Ostafe

• Lavinia Ostafe

Research team from the Faculty of Mathematics of the University Ovidius - Constanta

• Viviana Ene – responsabil proiect Univ. Ovidius - Constanta

• Mirela Stefanescu

• Denis Ibadula

• Alexandru Bobe

• Marian George Ciuca

• Irina Cristea

• Mariana Dumitru

• Anda Olteanu

Research that was financially supported in 2005 and 2007

1. 'Lefschetz properties on complete intersection algebras of embedding dimension three', authors Dorin Popescu and Marius Vladoiu;

2. 'On the Hilbert series of transversal polymatroids', author Alin Stefan;

3. 'Finite simplicial multicomplexes', author Mircea Cimpoeas.

4. 'The Groebner region of an ideal', author Alexandru Bobe;

5. 'Groebner fan. The state polytope', author Alexandru Bobe;

6. 'Monomial ideals: some examples and computations with Singular', author Viviana Ene.

7. 'Classes of integral domains characterized by their homological behaviour' authors T. Dumitrescu and C. Ionescu.

8. 'Finitely generated-fragmented domains' authors T. Dumitrescu and J. Coykendall.

9. 'Fitting conditions for symmetric algebras of modules of finite projective dimension', authors C. Ionescu, G. Restuccia and R. Utano.

10. 'On the Structure of Maximal Cohen-Macaulay Modules over the Ring k[[x,y]]/(x^n), authors: Viviana Ene and Dorin Popescu.

11. 'On the Structure of Nilpotent Endomorphisms and Applications', author: Viviana Ene.

12. 'Beilinson type spectral sequences on scrolls', authors M. Aprodu and V. Brinzanescu;

13. 'The Classification of the Non-Degenerated Plane Cubics over Qp From the Point of View of the Associated Igusa Local Zeta Function', author Denis Ibadula;

14. 'Algebraic invariants for Bestvina-Brady groups', authors S. Papadima and A. Suciu;

15. 'The arboreal structure of the metric space X:=GL_2(Qp)/Qp*GL_2(Zp)', author Denis Ibadula;

16. 'On the Plane Cubics over Qp and the Associated Igusa Zeta Function', author Denis Ibadula;

17. 'Nonarchimedean Analysis and Applications', ed. Acad. Romane, authors M. Vajaitu and A. Zaharescu.

Romanian