Simplicial Moves on Balanced Complexes

نویسندگان

  • IVAN IZMESTIEV
  • ISABELLA NOVIK
چکیده

We introduce a notion of cross-flips: local moves that transform a balanced (i.e., properly (d + 1)-colored) triangulation of a combinatorial d-manifold into another balanced triangulation. These moves form a natural analog of bistellar flips (also known as Pachner moves). Specifically, we establish the following theorem: any two balanced triangulations of a closed combinatorial d-manifold can be connected by a sequence of cross-flips. Along the way we prove that for every m ≥ d + 2 and any closed combinatorial d-manifold M , two m-colored triangulations of M can be connected by a sequence of bistellar flips that preserve the vertex colorings.

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تاریخ انتشار 2016