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Skeleta of Affine Hypersurfaces

Helge Ruddat, Nicolò Sibilla, David Treumann, Eric Zaslow

Number 18
Author Helge Ruddat
Year 2012

A smooth affine hypersurface Z of complex dimension n is homotopy equivalent to an n-dimensional cell complex. Given a defining polynomial f for Z as well as a regular triangulation of its Newton polytope, we provide a purely combinatorial construction of a compact topological space S as a union of components of real dimension n, and prove that S embeds into Z as a deformation retract. In particular, Z is homotopy equivalent to S.

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