Obstruction theory in a model category and Klein and Williams’ intersection invariants

Autor:	Kate Ponto
Rok vydání:	2022
Předmět:	Applied Mathematics General Mathematics
Zdroj:	Proceedings of the American Mathematical Society. 151:439-452
ISSN:	1088-6826 0002-9939
DOI:	10.1090/proc/16076
Popis:	We give an obstruction theory 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 theory produces a single invariant that is complete in the presence of the appropriate generalizations of dimension and connectivity assumptions.
Databáze:	OpenAIRE
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