Let G = A n , a finite alternating group. We study the commuting graph of G and establish, for all possible values of n barring 13, 14, 17, and 19 whether or not the independence number is equal to the clique-covering number.

This is the first of two volumes of a state-of-the-art survey article collection which originates from three commutative algebra sessions at the 2009 Fall Southeastern American Mathematical Society Meeting at Florida ...

RESUMEN: Es el objetivo de esta tesis desarrollar algoritmos o métodos, que explotan las propiedades de los grupos no conmutativos y proporcionan información local rel¬evante sobre la estructura geométrica de grupos así ...

We give a method to describe the quotient of the local Bruhat–Tits tree TP for PGL2(K), where K is a global function field, by certain subgroups of PGL2(K) of arithmetical significance. In particular, we can compute the ...