Seminar on Algebra (Nis)

PROGRAM

Matematicki institut SANU
Kneza Mihaila 35
11001 Beograd, p.p. 367
tel. 630-170, fax 186-105

5. maj
P. Stanimirovic: Determinantal representation of generalized inverses in commutative rings

We study determinantal representation of and -generalized inverses for matrices with elements from the commutative ring with 1. The representation is based on the construction of list of orthogonal idempotents whose sum is 1, which fulfills the condition .

12. maj
S. Bogdanovic and M. Ciric: Subsemigroups generated by regular elements

We describe certain properties of semigroups through the properties of its subsemigroups generated by left, right or intra-regular elements, regular elements, idempotents etc.

19. maj
M. Ciric and S. Bogdanovic: Decompositions and conpositions of lattices

We talk about residuated sums and double Plonka sums of posets, lattices and complete lattices. We also study related direct limits. Applying these results we give structural characterization of the weak congruence lattice of an algebra.

Seminar se odrzava utorkom, u prostorijama Filozofskog fakulteta, u Nisu, Studijske grupe za Matematiku, ul. Carnojevica 10, sa pocetkom u 11 casova.

Rukovodioci seminara
Prof. dr Stojan Bogdanovic
Prof. dr Miroslav Ciric