122 citations · 901 across the 71 of their papers we have counts for
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An equivariant Hilbert basis theorem
Daniel Erman, Steven V Sam, Andrew Snowden
We prove a version of the Hilbert basis theorem in the setting of equivariant algebraic geometry: given a group G acting on a finite type morphism of schemes X -> S, if S is topolo…
Stability in the homology of unipotent groups
Andrew Putman, Steven V Sam, Andrew Snowden
Let be a (not necessarily commutative) ring whose additive group is finitely generated and let be the group of upper-triangular unipotent matrices over…
Constructing elliptic curves from Galois representations
Andrew Snowden, Jacob Tsimerman
Given a non-isotrivial elliptic curve over an arithmetic surface, one obtains a lisse -adic sheaf of rank two over the surface. This lisse sheaf has a number of straightforwa…
Some generalizations of Schur functors
Steven V Sam, Andrew Snowden
The theory of Schur functors provides a powerful and elegant approach to the representation theory of GL_n - at least to the so-called polynomial representations - especially to qu…
Hilbert series for twisted commutative algebras
Steven V Sam, Andrew Snowden
Suppose that for each n >= 0 we have a representation of the symmetric group S_n. Such sequences arise in a wide variety of contexts, and often exhibit uniformity in some way…
Periodicity in the cohomology of symmetric groups via divided powers
Rohit Nagpal, Andrew Snowden
A famous theorem of Nakaoka asserts that the cohomology of the symmetric group stabilizes. The first author generalized this theorem to non-trivial coefficient systems, in the form…