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math.GR2021★ 11 cited
Groups of p-absolute Galois type that are not absolute Galois groups
Simone Blumer, Alberto Cassella, Claudio Quadrelli
Let p be a prime. We study pro-p groups of p-absolute Galois type, as defined by Lam-Liu-Sharifi-Wake-Wang. We prove that the pro-p completion of the right-angled Artin group assoc…
math.GR2019★ 6 cited
Right-angled Artin groups and enhanced Koszul properties
Alberto Cassella, Claudio Quadrelli
Let F be a finite field. We prove that the cohomology algebra with coefficients in F of a right-angled Artin group is a strongly Koszul algebra for every finite graph . Moreover…