On the Structure of Cohomology of Hamiltonian p-Algebras

Details On the Structure of Cohomology of Hamiltonian p-Algebras On the Structure of Cohomology of Hamiltonian p-Algebras

2004-04-13

arxiv.org/abs/math/0404247v3

Computer Algebra in Scientific Computing, CASC 2004, V.G.Ganzha, E.W.Mayr and E.V.Vorozhtsov (Eds.), TUM, Munich, 2004, pp.307

Mathematics

Representation Theory

5 pages, corrected to match published version

Scientific paper

We demonstrate advantages of non-standard grading for computing cohomology of restricted Hamiltonian and Poisson algebras. These algebras contain the inner grading element in the properly defined symmetric grading compatible with the symplectic structure. Using modulo p analog of the theorem on the structure of cohomology of Lie algebra with inner grading element, we show that all nontrivial cohomology classes are located in the grades which are the multiples of the characteristic p. Besides, this grading implies another symmetries in the structure of cohomology. These symmetries are based on the Poincare duality and symmetry with respect to transpositions of conjugate variables of the symplectic space. Some results obtained by computer program utilizing these peculiarities in the cohomology structure are presented.

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