Cech and de Rham Cohomology of Integral Forms

Details Cech and de Rham Cohomology of Integral Forms Cech and de Rham Cohomology of Integral Forms

2010-03-12

arxiv.org/abs/1003.2506v3

Physics

Mathematical Physics

20 pages, LaTeX, we expanded the introduction, we add a complete analysis of the cohomology and we derive a new duality betwee

Scientific paper

We present a study on the integral forms and their Cech/de Rham cohomology. We analyze the problem from a general perspective of sheaf theory and we explore examples in superprojective manifolds. Integral forms are fundamental in the theory of integration in supermanifolds. One can define the integral forms introducing a new sheaf containing, among other objects, the new basic forms delta(dtheta) where the symbol delta has the usual formal properties of Dirac's delta distribution and acts on functions and forms as a Dirac measure. They satisfy in addition some new relations on the sheaf. It turns out that the enlarged sheaf of integral and "ordinary" superforms contains also forms of "negative degree" and, moreover, due to the additional relations introduced, its cohomology is, in a non trivial way, different from the usual superform cohomology.

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