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math.AT2024
Cohomology Rings of Toric Wonderful Model
Lorenzo Giordani, Roberto Pagaria, Viola Siconolfi
We describe the cohomology ring of toric wonderful models for arbitrary building set, including the case of non well-connected ones. Our techniques are based on blowups of posets,…
math.AT2024
Cohomology ring of non-compact abelian arrangements
Evienia Bazzocchi, Roberto Pagaria, Maddalena Pismataro
We give a Orlik-Solomon type presentation for the cohomology ring of arrangements in a non-compact abelian Lie group. The new insight consists in comparing arrangements in differen…