May

06

2016

The marine subsurface is characterized by a wide range of processes involving diagenesis of organic and inorganic substrates and fluid-rock interactions, which significantly alter composition of the pore fluids. Organic diagenesis is intimately linked with a wide variety of microbial processes that lead, under some cases, to the production and consumption of gases. Minerals delivered to the ocean from rivers and volcanoes also contain reactive silicates that are subject to alteration under a variety of temperature and pH conditions.

May

09

2016

A building is a type of simplicial complex originally developed in order to study a class of topological groups called Lie groups. For such a group G, one finds a pair of subgroups B and N of G which together algebraically generate G; if B and N satisfy certain properties, they form what is known as a BN-pair for G. From a BN-pair for a group G, a building can be derived, and G acts upon this building as a group of simplicial complex automorphisms.

May

09

2016

May

10

2016

Dr. Richard Tapia, professor in the Department of Computational and Applied Mathematics at Rice University, will present his talk, "The Remarkable Journey of Isoperimetric Problem: From Euler to Steiner to Weierstrass,” an overview of the history of the impactful isoperimetric problem. He will identify three distinct classes of solution approaches that have been used throughout history: the Cartesian coordinate representation approach of Euler, the synthetic geometry approach of Steiner, and the parametric representation approach of Weierstrass.

May

10

2016

This week's seminar is the Lonseth Lecture, preceded by the departmental awards ceremony.