The subject of this article is bialgebra factorizations or cross product bialgebras without cocycles. We establish a theory characterizing cross product bialgebras universally in terms of projections and injections. Especially all known types of biproduct, double cross product, and bicross product b
Cross Product Bialgebras Part II
β Scribed by Yuri Bespalov; Bernhard Drabant
- Book ID
- 102968144
- Publisher
- Elsevier Science
- Year
- 2001
- Tongue
- English
- Weight
- 560 KB
- Volume
- 240
- Category
- Article
- ISSN
- 0021-8693
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β¦ Synopsis
This is the central article of a series of three papers on cross product bialgebras. We present a universal theory of bialgebra factorizations (or cross product bialgebras) with cocycles and dual cocycles. We also provide an equivalent (co-)modular (co-)cyclic formulation. All known examples as for instance bi-or smash, doublecross and bicross product bialgebras as well as double biproduct bialgebras and bicrossed or cocycle bicross product bialgebras are now united within a single theory. Furthermore our construction yields various novel types of cross product bialgebras.
π SIMILAR VOLUMES
We investigate the problem of explicitly constructing non-cyclic free groups in finite-dimensional crossed products using valuation criteria. The results are applied to produce explicit free groups in division algebras generated by nilpotent groups, and symmetric free groups in group rings of finite