Descent Construction for GSpin Groups ( Memoirs of the American Mathematical Society )

Publication series :Memoirs of the American Mathematical Society

Author: Joseph Hundley;Eitan Sayag  

Publisher: American Mathematical Society‎

Publication year: 2016

E-ISBN: 9781470434441

P-ISBN(Hardback):  9781470416676

Subject: O18 geometric topology

Keyword: 暂无分类

Language: ENG

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Descent Construction for GSpin Groups

Description

In this paper the authors provide an extension of the theory of descent of Ginzburg-Rallis-Soudry to the context of essentially self-dual representations, that is, representations which are isomorphic to the twist of their own contragredient by some Hecke character. The authors' theory supplements the recent work of Asgari-Shahidi on the functorial lift from (split and quasisplit forms of) $GSpin_{2n}$ to $GL_{2n}$.

Chapter

Title page

Chapter 1. Introduction

1.1. Functoriality

1.2. Self dual representations of 𝐺𝐿_{𝑛}(\A) and the descent method

1.3. Beyond classical

1.4. Descent construction for essentially self dual representations

1.5. Applications

1.6. The descent construction and the structure of the argument

1.7. Structure of the paper

1.8. Acknowledgements

Part 1 . General matters

Chapter 2. Some notions related to Langlands functoriality

2.1. Weak Lift

2.2. Essentially self-dual: 𝜂-orthogonal and 𝜂-symplectic

2.3. Isobaric sums

Chapter 3. Notation

3.1. General

3.2. Notions of “genericity”

Chapter 4. The Spin groups 𝐺𝑆𝑝𝑖𝑛_{𝑚} and their quasisplit forms

4.1. Similitude groups 𝐺𝑆𝑝_{2𝑛},𝐺𝑆𝑂_{2𝑛}

4.2. Definition of split 𝐺𝑆𝑝𝑖𝑛

4.3. Definition of quasi-split 𝐺𝑆𝑝𝑖𝑛

4.4. Unipotent subgroups of 𝐺𝑆𝑝𝑖𝑛_{𝑚} and their characters

Chapter 5. “Unipotent periods”

5.1. A lemma regarding unipotent periods

5.2. Relation of unipotent periods via theta functions

Part 2 . Odd case

Chapter 6. Notation and statement

6.1. Siegel Parabolic

6.2. Weyl group of 𝐺𝑆𝑝𝑖𝑛_{2𝑚}; its action on standard Levis and their representations

Chapter 7. Unramified correspondence

Chapter 8. Eisenstein series I: Construction and main statements

Chapter 9. Descent construction

9.1. Vanishing of deeper descents and the descent representation

9.2. Main Result

9.3. Proof of main theorem

Chapter 10. Appendix I: Local results on Jacquet functors

Chapter 11. Appendix II: Identities of unipotent periods

11.1. A lemma regarding the projection, and a remark

11.2. Relations among unipotent periods used in Theorem 9.2.1

Part 3 . Even case

Chapter 12. Formulation of the main result in the even case

Chapter 13. Notation

13.1. Siegel parabolic

13.2. Weyl group of 𝐺𝑆𝑝𝑖𝑛_{2𝑚+1}; its action on standard Levis and their representations

Chapter 14. Unramified correspondence

Chapter 15. Eisenstein series

Chapter 16. Descent construction

16.1. Vanishing of deeper descents and the descent representation

16.2. Vanishing of incompatible descents

16.3. Main result

16.4. Proof of the main theorem (Even case)

Chapter 17. Appendix III: Preparations for the proof of Theorem 15.0.12

17.1. Poles on Hyperplanes

17.2. Intertwining operators

17.3. Reduction to relative rank one situation

Chapter 18. Appendix IV: Proof of Theorem 15.0.12

Chapter 19. Appendix V: Auxilliary results used to prove Theorem 15.0.12

19.1. Proof of Lemma 17.3.3

19.2. Proof of Proposition 17.2.1

19.3. Proof of Proposition 18.0.4

19.4. Proof of Proposition 18.0.6

19.5. Proof of 18.0.8

Chapter 20. Appendix VI: Local results on Jacquet functors

Chapter 21. Appendix VII: Identities of unipotent periods

Bibliography

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