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math.RA2016★ 2 cited
A note on Green functors with inflation
Alex Bartel, Matthew Spencer
This note is motivated by the problem to understand, given a commutative ring F, which G-sets X, Y give rise to isomorphic F[G]-representations F[X]\cong F[Y]. A typical step in su…
math.RA2015★ 11 cited
Commensurability of automorphism groups
Alex Bartel, Hendrik W. Lenstra
We develop a theory of commensurability of groups, of rings, and of modules. It allows us, in certain cases, to compare sizes of automorphism groups of modules, even when those are…