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Formality of the complements of subspace arrangements with geometric lattices

Eva Maria Feichtner·Sergey Yuzvinsky
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Abstract

We show that, for an arrangement of subspaces in a complex vector space with geometric intersection lattice, the complement of the arrangement is formal. We prove that the Morgan rational model for such an arrangement complement is formal as a differential graded algebra.

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Eva Maria Feichtner, Sergey Yuzvinsky. 2005-04-15. Formality of the complements of subspace arrangements with geometric lattices. https://arxiv.org/abs/math/0504321

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