Rational Homotopy Type of Complements of Submanifold Arrangements
arxiv(2022)
摘要
We will provide an explicit cdga controlling the rational homotopy type of
the complement to a smooth arrangement X-∪_i Z_i in a smooth compact
algebraic variety X over ℂ. This generalizes the corresponding
result of Morgan in case of a divisor with normal crossings to arbitrary smooth
arrangements. The model is given in terms of the arrangement Z_i and agrees
with a model introduced by Chen-Lü-Wu for computing the cohomology. As an
application we reprove a formality theorem due to Feichtner-Yuzvinksy. Then we
show that the Kritz-Totaro model computes the rational homotopy type in case of
chromatic configuration spaces of smooth compact algebraic varieties.
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关键词
rational homotopy type,submanifold arrangements,complements
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