Commensurability of automorphism groups

Bartel, A; Lenstra, HW

Bartel, A (reprint author), Univ Warwick, Math Inst, Zeeman Bldg, Coventry CV4 7AL, W Midlands, England.

COMPOSITIO MATHEMATICA, 2017; 153 (2): 323

Abstract

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 o......

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