Research Seminar

The Research Seminar is held on Tuesdays at 3:14pm in Bell Hall 143, unless noted otherwise.

November 24, 2009

Dr. Piotr Wojciechowski

Matrix Algebras With Multiplicative Decomposition Property III

Abstract

November 17, 2009

Dr. Emil Daniel Schwab

A Combinatorial Research on Inverse Semigroups

Abstract

October 27, 2009

Dr. M. Amine Khamsi

Improvement to Caristi - Ekeland principle

Abstract

Banach's Contraction Mapping Principle is remarkable in its simplicity, yet it is perhaps the most widely applied fixed point theorem in all of analysis. Although the basic idea was known to others earlier, the principle first appeared in explicit form in Banach's 1922 thesis where it was used to establish the existence of a solution to an integral equation.

A wonderful extension to Banach Contraction Mapping Principle was given by Caristi. The Caristi fixed point theorem has found many applications in nonlinear analysis. It is shown, for example, that this theorem yields essentially all the known inwardness results of geometric fixed point theory in Banach spaces. This theorem is amazingly equivalent to another fundamental theorem: Ekeland variational principle.

In this talk we will give an improvement of the above theorems via a characterization of the existence of minimal elements in partially ordered sets in terms of fixed point of multivalued maps.

October 20, 2009

Dr. Luis Valdez-Sanchez

Hyperbolic realization of graphs and graph pairs, part II

Abstract

After showing explicit examples of the process of construction of a hyperbolic 3-manifold from a labeled graph on a torus, we will proceed with the presentation of the general results that make such a process possible in more general situations.

October 6, 2009

Dr. Luis Valdez-Sanchez

Hyperbolic realization of graphs and graph pairs

Abstract

September 22, 2009

Dr. Piotr Wojciechowski

Matrix Algebras With Multiplicative Decomposition Property II

Abstract

September 15, 2009

Dr. Piotr Wojciechowski

Matrix Algebras With Multiplicative Decomposition Property

Abstract

For more information about the Research Seminar, please contact Dr. Mohamed Khamsi, mohamed@math.utep.edu.

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