대한수학회보 (Bulletin of the Korean Mathematical Society)

  • 제54권1호
  • /
  • Pages.265-276
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  • 2017
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  • 1015-8634(pISSN)
  • /
  • 2234-3016(eISSN)
대한수학회 (Korean Mathematical Society)
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SIMPLICIAL WEDGE COMPLEXES AND PROJECTIVE TORIC VARIETIES

  • Kim, Jin Hong (Department of Mathematics Education Chosun University)
  • 투고 : 2016.01.29
  • 발행 : 2017.01.31
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초록

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.

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참고문헌

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