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On some generalizations of Tate Cohomology: an overview
(Pontificia Universidad Católica del Perú, 2016)
This paper is an overview of the developments and generalizations of Tate Cohomology. The number of such generalizations is high and the literature on many of them is vast. Hence, we do not pretend to give a complete account ...
Characteristic classes of modules
(Pontificia Universidad Católica del Perú, 2008)
In this paper we have developed a general theory of characteristic classes of modules. To a given invariant map defined on a Lie algebra, we associate a cohomology class by using the curvature form of a certain kind of ...
Graphs and Equivariant Cohomology
Let X be a T-skeletal variety, that is, a complex algebraic variety where a complex torus T acts with only nitely many xed points and invariant curves. By a result of Goresky, Kottwtiz and MacPherson, the equivariant ...