The Tame Fundamental Group of a Formal Neighbourhood of a Divisor with Normal Crossings on a Scheme

Inhalt
Kummer coverings.- Tamely ramified coverings of schemes.- Extension of some notions from the theory of schemes to the theory of formal schemes.- Tamely ramified coverings of formal schemes.- The tame fundamental group of a formal neighbourhood of an irreducible divisor.- Comparison of two 2-cohomology classes.- The tame fundamental group of a formal neighbourhood of an irreducible divisor (continued).- Descent of tamely ramified coverings.- An application: the fundamental group of the spectrum of a complete local ring, of dimension two, minus a closed set.