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Finite reductive groups and their representations lie at the heart of group theory. This volume treats linear representations of finite reductive groups and their modular aspects together with Hecke algebras, complex reflection groups, quantum groups, arithmetic groups, Lie groups, symmetric groups and general finite groups.
At the crossroads of representation theory, algebraic geometry and finite group theory, this 2004 book blends together many of the main concerns of modern algebra, with full proofs of some of the most remarkable achievements in the area. Cabanes and Enguehard follow three main themes: first, applications of etale cohomology, leading to the proof of the recent Bonnafe-Rouquier theorems. The second is a straightforward and simplified account of the Dipper-James theorems relating irreducible characters and modular representations. The final theme is local representation theory. One of the main results here is the authors' version of Fong-Srinivasan theorems. Throughout the text is illustrated by many examples and background is provided by several introductory chapters on basic results and appendices on algebraic geometry and derived categories. The result is an essential introduction for graduate students and reference for all algebraists.
Finite reductive groups and their representations lie at the heart of goup theory. After representations of finite general linear groups were determined by Green (1955), the subject was revolutionized by the introduction of constructions from l-adic cohomology by Deligne-Lusztig (1976) and by the approach of character-sheaves by Lusztig (1985). The theory now also incorporates the methods of Brauer for the linear representations of finite groups in arbitrary characteristic and the methods of representations of algebras. It has become one of the most active fields of contemporary mathematics. The present volume reflects the richness of the work of experts
gathered at an international conference held in Luminy. Linear
representations of finite reductive groups (Aubert, Curtis-Shoji,
Lehrer, Shoji) and their modular aspects Cabanes Enguehard,
Geck-Hiss) go side by side with many related structures: Hecke
algebras associated with Coxeter groups (Ariki, Geck-Rouquier,
Pfeiffer), complex reflection groups (Broue-Michel, Malle), quantum
groups and Hall algebras (Green), arithmetic groups (Vigneras), Lie
groups (Cohen-Tiep), symmetric groups (Bessenrodt-Olsson), and
general finite groups (Puig). With the illuminating introduction by
Paul Fong, the present volume forms the best invitation to the
field.
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