• 제목/요약/키워드: Shephard's diagrams

검색결과 1건 처리시간 0.014초

SIMPLICIAL WEDGE COMPLEXES AND PROJECTIVE TORIC VARIETIES

  • Kim, Jin Hong
    • 대한수학회보
    • /
    • 제54권1호
    • /
    • pp.265-276
    • /
    • 2017
  • Let K be a fan-like simplicial sphere of dimension n-1 such that its associated complete fan is strongly polytopal, and let v be a vertex of K. Let K(v) be the simplicial wedge complex obtained by applying the simplicial wedge operation to K at v, and let $v_0$ and $v_1$ denote two newly created vertices of K(v). In this paper, we show that there are infinitely many strongly polytopal fans ${\Sigma}$ over such K(v)'s, different from the canonical extensions, whose projected fans ${Proj_v}_i{\Sigma}$ (i = 0, 1) are also strongly polytopal. As a consequence, it can be also shown that there are infinitely many projective toric varieties over such K(v)'s such that toric varieties over the underlying projected complexes $K_{{Proj_v}_i{\Sigma}}$ (i = 0, 1) are also projective.