Book contents
- Frontmatter
- Contents
- Introduction to the Second Edition
- From the Introduction to the First Edition
- 1 Basic Results on Algebraic Groups
- 2 Structure Theorems for Reductive Groups
- 3 (B,N)-Pairs; Parabolic, Levi, and Reductive Subgroups; Centralisers of Semi-simple Elements
- 4 Rationality, the Frobenius Endomorphism, the Lang–Steinberg Theorem
- 5 Harish-Chandra Theory
- 6 Iwahori–Hecke Algebras
- 7 The Duality Functor and the Steinberg Character
- 8 ℓ-Adic Cohomology
- 9 Deligne–Lusztig Induction: The Mackey Formula
- 10 The Character Formula and Other Results on Deligne–Lusztig Induction
- 11 Geometric Conjugacy and the Lusztig Series
- 12 Regular Elements; Gelfand–Graev Representations; Regular and Semi-Simple Characters
- 13 Green Functions
- 14 The Decomposition of Deligne–Lusztig Characters
- References
- Index
11 - Geometric Conjugacy and the Lusztig Series
Published online by Cambridge University Press: 14 February 2020
Book contents
- Frontmatter
- Contents
- Introduction to the Second Edition
- From the Introduction to the First Edition
- 1 Basic Results on Algebraic Groups
- 2 Structure Theorems for Reductive Groups
- 3 (B,N)-Pairs; Parabolic, Levi, and Reductive Subgroups; Centralisers of Semi-simple Elements
- 4 Rationality, the Frobenius Endomorphism, the Lang–Steinberg Theorem
- 5 Harish-Chandra Theory
- 6 Iwahori–Hecke Algebras
- 7 The Duality Functor and the Steinberg Character
- 8 ℓ-Adic Cohomology
- 9 Deligne–Lusztig Induction: The Mackey Formula
- 10 The Character Formula and Other Results on Deligne–Lusztig Induction
- 11 Geometric Conjugacy and the Lusztig Series
- 12 Regular Elements; Gelfand–Graev Representations; Regular and Semi-Simple Characters
- 13 Green Functions
- 14 The Decomposition of Deligne–Lusztig Characters
- References
- Index
Summary
We show how geometric conjugacy can be viewed in terms of the dual group. We explain the centre of a semi-simple group in terms of the affine root system. We explain Lusztig’s Jordan decomposition of characters. We express the characters of the general linear and unitary groups in term of Deligne–Lusztig characters and give the character table of GL2.
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- Information
- Representations of Finite Groups of Lie Type , pp. 161 - 195Publisher: Cambridge University PressPrint publication year: 2020