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Displaying similar documents to “Actions of the group of homeomorphisms of the circle on surfaces”

Mapping class groups of non-orientable surfaces for beginners

Luis Paris (2014)

Winter Braids Lecture Notes

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The present paper is the notes of a mini-course addressed mainly to non-experts. Its purpose is to provide a first approach to the theory of mapping class groups of non-orientable surfaces.

Two remarks about surfaces

Wilczyński, Władysław, Rzepecka, Genowefa (2015-11-26T16:01:41Z)

Acta Universitatis Lodziensis. Folia Mathematica

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Mazes on surfaces

Izidor Hafner, Tomislav Zitko (2003)

Visual Mathematics

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A simpler proof of toroidalization of morphisms from 3-folds to surfaces

Steven Dale Cutkosky (2013)

Annales de l’institut Fourier

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We give a simpler and more conceptual proof of toroidalization of morphisms of 3-folds to surfaces, over an algebraically closed field of characteristic zero. A toroidalization is obtained by performing sequences of blow ups of nonsingular subvarieties above the domain and range, to make a morphism toroidal. The original proof of toroidalization of morphisms of 3-folds to surfaces is much more complicated.