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Obstructions in a model category and Klein and Williams' intersection invariants
Published 27 Jul 2020 in math.AT | (2007.13702v2)
Abstract: We give an obstruction for lifts and extensions in a model category inspired by Klein and Williams' work on intersection theory. In contrast to the familiar obstructions from algebraic topology, this approach produces a single invariant that is complete in the presences of the appropriate generalizations of dimension and connectivity assumptions.
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