Showing papers by "Ronald Brown published in 2008"
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TL;DR: In this article, the higher homotopy van Kampen theorem is used to describe homo- topical excision in critical dimensions in terms of induced modules and crossed modules over groupoids.
Abstract: Higher Homotopy van Kampen Theorems allow some colimit calculations of certain homotopical invariants of glued spaces. One corollary is to describe homo- topical excision in critical dimensions in terms of induced modules and crossed modules over groupoids. This paper shows how bred and cobred
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