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OverviewHecke algebras arise in representation theory as endomorphism algebras of induced representations. One of the most important classes of Hecke algebras is related to representations of reductive algebraic groups over $p$-adic or finite fields. In 1979, in the simplest (equal parameter) case of such Hecke algebras, Kazhdan and Lusztig discovered a particular basis (the KL-basis) in a Hecke algebra, which is very important in studying relations between representation theory and geometry of the corresponding flag varieties. It turned out that the elements of the KL-basis also possess very interesting combinatorial properties. In the present book, the author extends the theory of the KL-basis to a more general class of Hecke algebras, the so-called algebras with unequal parameters. In particular, he formulates conjectures describing the properties of Hecke algebras with unequal parameters and presents examples verifying these conjectures in particular cases. Written in the author's precise style, the book gives researchers and graduate students working in the theory of algebraic groups and their representations an invaluable insight and a wealth of new and useful information. Full Product DetailsAuthor: G. LusztigPublisher: American Mathematical Society Imprint: American Mathematical Society Edition: New ed. Volume: No.18 Weight: 0.480kg ISBN: 9780821833568ISBN 10: 0821833561 Pages: 136 Publication Date: 01 February 2003 Audience: Professional and scholarly , Professional & Vocational Format: Hardback Publisher's Status: Active Availability: Temporarily unavailable ![]() The supplier advises that this item is temporarily unavailable. It will be ordered for you and placed on backorder. Once it does come back in stock, we will ship it out to you. Table of ContentsIntroduction Coxeter groups Partial order on $W$ The algebra ${\mathcal H}$ The bar operator The elements $c_w$ Left or right multiplication by $c_s$ Dihedral groups Cells Cosets of parabolic subgroups Inversion The longest element for a finite $W$ Examples of elements $D_w$ The function $\mathbf{a}$ Conjectures Example: The split case Example: The quasisplit case Example: The infinite dihedral case The ring $J$ Algebras with trace form The function ${\mathbf{a}}_E$ Study of a left cell Constructible representations Two-sided cells Virtual cells Relative Coxeter groups Representations A new realization of Hecke algebras Bibliography Other titles in this series.ReviewsAuthor InformationTab Content 6Author Website:Countries AvailableAll regions |