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Geometric bistellar flips. The setting, the context and a construction

Francisco Santos
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Abstract

We give a self-contained introduction to the theory of secondary polytopes and geometric bistellar flips in triangulations of polytopes and point sets, as well as a review of some of the known results and connections to algebraic geometry, topological combinatorics, and other areas. As a new result, we announce the construction of a point set in general position with a disconnected space of triangulations. This shows, for the first time, that the poset of strict polyhedral subdivisions of a point set is not always connected.

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Francisco Santos. 2006-01-30. Geometric bistellar flips. The setting, the context and a construction. https://arxiv.org/abs/math/0601746

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