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Homology of subgroups of right-angled Artin groups
classification
🧮 math.GR
math.AC
keywords
artingroupshomologyright-angledsubgroupsalgebracertaincommutative
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We describe the (co)homology of a certain family of normal subgroups of right-angled Artin groups that contain the commutator subgroup, as modules over the quotient group. We do so in terms of (skew) commutative algebra of squarefree monomial ideals.
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Equivariant formality and the cohomology of subgroups of right-angled Coxeter groups
Models for classifying spaces of coabelian subgroups of right-angled Coxeter groups are built as homotopy orbits of moment-angle complexes, identifying their cohomology with equivariant cohomology and giving a graph-t...
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