Yury Ustinovsky

  1. Toral rank conjecture for moment-angle complexes.

    Authors: Yury Ustinovsky
    Subjects: Algebraic Topology
    Abstract

    In this paper we consider an operation on the set of simplicial complexes,
    which we call "doubling operation". We show that the moment-angle complex Z_K
    is the real moment-angle complex RZ_L(K) for simplicial complex L(K) obtained
    from K by applying "doubling operation". As an application of this operation we
    prove the toral rank conjecture for Z_K by estimating the lower bound of the
    cohomology rank (with rational coefficients) of the real moment-angle complexes
    RZ_K.

  2. Doubling operation for polytopes and torus actions.

    Authors: Yury Ustinovsky
    Subjects: Algebraic Topology
    Abstract

    In this note we give the definition of the "doubling operation" for simple
    polytopes, find the formula for the h-polynomial of new polytope.As an
    application of this operation we establish the relationship between
    moment-angle manifolds and their real analogues and prove the toral rank
    conjecture for moment-angle manifolds Z_P.

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