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Finite or discrete collections of geometric objects. Packings, tilings, polyhedra, polytopes, intersection, arrangements, rigidity.

2 votes

Examples of toric threefolds

This is rather a comment/question than an answer, but I am not allowed to comment, yet: I just know the following for a lattice polytope $\Delta$: $\mathbb P_{\Delta}$ is smooth if and only if $\Delt …
Lars Kastner's user avatar