A cohomology for vector valued differential forms
โ Scribed by Peter W. Michor; Hubert Schicketanz
- Publisher
- Springer
- Year
- 1989
- Tongue
- English
- Weight
- 265 KB
- Volume
- 7
- Category
- Article
- ISSN
- 0232-704X
No coin nor oath required. For personal study only.
โฆ Synopsis
A rather simple natural outer derivation of the graded Lie algebra of all vector valued differential forms with the Fr6licher-Nijenhuis bracket turns out to be a differential and gives rise to a cohomology of the manifold, which is functorial under local diffeomorphisms. This cohomology is determined as the direct product of the de Rham cohomology space and the graded Lie algebra of "traceless" vector valued differential forms, equipped with a new natural differential concomitant as graded Lie bracket. We find two graded Lie algebra structures on the space of differential forms. Some consequences and related results are also discussed.
๐ SIMILAR VOLUMES
An older geometric technique for the study of invariance groups of partial differential equations, originally proposed by one of the authors and F. B. Estabrook, is generalized and extended to problems involving exterior equations for vector-valued or Lie algebra-valued exterior differential forms.
Let E n k be the Siegel Eisenstein series of degree n and weight k. Garrett showed a formula of E p+q k on H p ร H q , where H n is the Siegel upper half space of degree n. This formula was useful for investigating the Fourier coefficients of the Klingen Eisenstein series and the algebraicity of the
which are entire functions, for growth problems\_ All such functions, when they satisfy a class of differential equations, are of bounded index and exponential type, and their components are also of bounded index\_