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477 arXiv version: fonts, pagination and layout may vary from GTM published version Tangential LS–category of K(π, 1)–foliations WILHELM SINGHOF ELMAR VOGT A K(π, 1)–foliation is one for which the universal covers of all leaves are contractible (thus all leaves are K(π, 1)'s for some π). In the first part of the paper we show that the tangential… (More)
Bonn Generalized presentations of infinite groups, in particular of Aut(F ω) Abstract We develop a theory of generalized presentations of groups. We give generalized presentations of the symmetric group Σ(X) and of the auto-morphism group of the free group of countable rank, Aut(F ω).