Homotopical variations and high-dimensional Zariski-van Kampen theorems

Chéniot, D.; Eyral, C.

doi:10.1090/S0002-9947-05-03907-3

Homotopical variations and high-dimensional Zariski-van Kampen theorems
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by D. Chéniot and C. Eyral PDF

Trans. Amer. Math. Soc. 358 (2006), 1-10 Request permission

Abstract:

We give a new definition of the homotopical variation operators occurring in a recent high-dimensional Zariski-van Kampen theorem, a definition which opens the way to further generalizations of theorems of this kind.

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