Skip to main content

All Questions

Filter by
Sorted by
Tagged with
1 vote
0 answers
125 views

When is a vector bundle on a Shimura variety an automorphic vector bundle?

Let $(G, X)$ be a Shimura datum, let $K \subset G(\mathbb{A}_f)$ be an open compact subgroup, and denote by $\text{Sh}_K(G,X)$ the Shimura variety whose complex points are given by $G(\mathbb{Q})\...
ChimiSeanGa's user avatar
1 vote
0 answers
136 views

Notion of "Hodge bundle" for abelian type Shimura varieties

For a Siegel type Shimura datum $(\text{GSp}_{2g}, \mathcal{H}^{\pm})$ and level $K$, we construct the Shimura variety $S_{g,K} := \text{Sh}_K(\text{GSp}_{2g},\mathcal{H}^{\pm})$. We have a universal ...
ChimiSeanGa's user avatar
4 votes
0 answers
206 views

Higher dimensional generalization of an identity between traces of Hecke operators and number of elliptic curves over finite fields?

In http://www.math.ubc.ca/~behrend/ladic.pdf, the author uses his generalization of Lefschetz trace formula to smooth algebraic stacks to prove an interesting identity (Proposition 6.4.11.): $\sum_{k}...
Zhiyu's user avatar
  • 6,622
11 votes
1 answer
786 views

A frustrating cohomology class on the moduli of abelian surfaces

Here's a very frustrating question that I have been stuck on for some time. I believe that my question could fit in a general framework of what happens when you restrict $L^2$-cohomology classes on a ...
Dan Petersen's user avatar
  • 40.2k
9 votes
2 answers
1k views

modularity of algebraic varieties

Hello, Are there any examples of varieties which are not Shimura varieties or abelian varieties and whose L-functions have been shown to be a product of automorphic L-functions? Thanks. N
Nicolás's user avatar
  • 2,842