Research Seminar
The Research Seminar is held on Tuesdays at 3:14pm in Bell Hall 143, unless noted otherwise.
November 24, 2009
Matrix Algebras With Multiplicative Decomposition Property III
November 17, 2009
A Combinatorial Research on Inverse Semigroups
October 27, 2009
Improvement to Caristi - Ekeland principle
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
Hyperbolic realization of graphs and graph pairs, part II
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
Hyperbolic realization of graphs and graph pairs
September 22, 2009
Matrix Algebras With Multiplicative Decomposition Property II
September 15, 2009
Matrix Algebras With Multiplicative Decomposition Property
For more information about the Research Seminar, please contact Dr. Mohamed Khamsi, mohamed@math.utep.edu.