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15 votes
0 answers
673 views

Exposition of Drinfeld's proof of function field Langlands for GL(2)

I know, or think I know, the vague outline of the proof: the Galois-to-automorphic direction is "classical," i.e. follows from converse theorems due to Grothendieck et al., and for the ...
Avi's user avatar
  • 311
14 votes
0 answers
358 views

How do we deduce the Jacquet-Langlands correspondence from Fargues' two towers?

In trying to understand the geometric proof of the local-Langlands and Jacquet-Langlands correspondence which uses Fargues's two tower theorem, I am having trouble finding a nice source on this, and I ...
Catherine Ray's user avatar
9 votes
0 answers
409 views

The proof of Kazhdan's density theorem (And does it hold over positive characteristic?)

When proving identities about traces of functions on representations of $p$-adic groups, Kazhdan's density theorem indicates one only has to check equalities of traces on tempered representations. ...
Charles Denis's user avatar
7 votes
0 answers
291 views

What does it mean for a complex valued function on $G(\mathbb A)$ to be smooth (or smooth of compact support)?

Let $G$ be a linear algebraic group over a number field $k$. Let $\mathbb A$ denote the adeles of $k$, $\mathbb A_f$ the finite adeles, and $k_{\infty} = \prod\limits_{v \mid \infty} k_v$. Here are ...
D_S's user avatar
  • 6,180
3 votes
0 answers
148 views

Casimir eigenvalues of p-adic automorphic representations

In the context of p-adic local Langlands correspondence: Is it possible to define Casimir eigenvalues for p-adic automorphic representations? If a local representation arises from a global Galois ...
kindasorta's user avatar
  • 2,907
3 votes
0 answers
139 views

L-functions for the Weil group over short exact sequences

Let $(\rho,V)$ be a continuous finite dimensional representation of the Weil group $W_F$ over a local field $F$. If $V$ decomposes as a direct sum $V_1 \oplus V_2$ of representations, then $$L(s,\...
D_S's user avatar
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