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20062026
most citedAn open image theorem for a general class of abelian varieties

49 citations · 127 across the 18 of their papers we have counts for

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math.GR2017

Coproducts of Finite Groups

Chris Hall

We show that for any pair of non-trivial finite groups, their coproduct in the category of finite groups is not representable.

math.GR2008

Monodromy Groups of Hurwitz-type Problems

Daniel Allcock, Chris Hall

We solve the Hurwitz monodromy problem for degree-4 covers. That is, the Hurwitz space H_{4,g} of all simply branched covers of P^1 of degree 4 and genus g is an unramified cover o…