The Serre spectral sequence of a noncommutative fibration for de Rham cohomology

Details The Serre spectral sequence of a noncommutative fibration for de Rham cohomology The Serre spectral sequence of a noncommutative fibration for de Rham cohomology

2005-08-11

arxiv.org/abs/math/0508194v1

Mathematics

Quantum Algebra

LaTeX, 33 pages

Scientific paper

For differential calculi on noncommutative algebras, we construct a twisted de Rham cohomology using flat connections on modules. This has properties similar, in some respects, to sheaf cohomology on topological spaces. We also discuss generalised mapping properties of these theories, and relations of these properties to corings. Using this, we give conditions for the Serre spectral sequence to hold for a noncommutative fibration. This might be better read as giving the definition of a fibration in noncommutative differential geometry. We also study the multiplicative structure of such spectral sequences. Finally we show that some noncommutative homogeneous spaces satisfy the conditions to be such a fibration, and in the process clarify the differential structure on these homogeneous spaces. We also give two explicit examples of differential fibrations: these are built on the quantum Hopf fibration with two different differential structures.

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