𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Semisimple Commutative Algebras with Positive Bases

✍ Scribed by David Chillag


Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
273 KB
Volume
210
Category
Article
ISSN
0021-8693

No coin nor oath required. For personal study only.

✦ Synopsis


Algebras that serve as models for concurrent studying of certain aspects of both the algebra of ordinary characters and the center of the group algebra of a finite group have been considered by various authors. In this article we offer another such model. The main differences between our model and the known ones are: 1. Our model includes Brauer characters and principal indecomposable characters as special cases. 2. Our emphasis is on the eigenvalues of the regular representation of the algebra elements, an approach that gives results on values of characters Ž . ordinary, central, Brauer, principal indecomposable as well as on their products.


📜 SIMILAR VOLUMES


On Hopf Algebras with Positive Bases
✍ Jiang-Hua Lu; Min Yan; Yongchang Zhu 📂 Article 📅 2001 🏛 Elsevier Science 🌐 English ⚖ 170 KB

We show that if a finite dimensional Hopf algebra H over ‫ރ‬ has a basis with respect to which all the structure constants are nonnegative, then H is isomorphic to the bi-cross-product Hopf algebra constructed by Takeuchi and Majid from a finite group G and a unique factorization G s G G of G into t

Holomorphic Idempotents and Retracts in
✍ Jerry R. Muir Jr. 📂 Article 📅 2000 🏛 Elsevier Science 🌐 English ⚖ 189 KB

Let A be a commutative C U -algebra with identity and open unit ball B. We study holomorphic functions F: B ª B that are idempotent under composition and establish necessary and sufficient conditions for a set R : B to be the image Ž of B under such an idempotent function. In other words, R is a hol

Computing with Quantized Enveloping Alge
✍ W.A. de Graaf 📂 Article 📅 2001 🏛 Elsevier Science 🌐 English ⚖ 367 KB

Let Uq(g) be the quantized enveloping algebra corresponding to the semisimple Lie algebra g. We describe algorithms to obtain the multiplication table of a PBW-type basis of Uq(g). We use this to obtain an algorithm for calculating a Gröbner basis of an ideal in the subalgebra U -, which leads to a