Duality between modal algebras and neighbourhood frames
✍ Scribed by Kosta Došen
- Book ID
- 110678275
- Publisher
- Springer Netherlands
- Year
- 1989
- Tongue
- English
- Weight
- 772 KB
- Volume
- 48
- Category
- Article
- ISSN
- 0039-3215
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📜 SIMILAR VOLUMES
In this paper the structure of pretemporal algebra is used to study some aspects of temporal algebras and modal algebras. The paper contains a computational approach to finite temporal algebras and a general splitting theorem for finite temporal algebras.
We construct a family of exact functors from the Bernstein ᎐Gelfand᎐Gelfand category O O of ᒐ ᒉ -modules to the category of finite-dimensional representations of n the degenerate affine Hecke algebra H of GL . These functors transform Verma l l modules to standard modules or zero, and simple modules
The ring QSym of quasi-symmetric functions is naturally the dual of the Solomon descent algebra. The product and the two coproducts of the first (extending those of the symmetric functions) correspond to a coproduct and two products of the second, which are defined by restriction from the symmetric