대한수학회논문집 (Communications of the Korean Mathematical Society)

  • 제20권1호
  • /
  • Pages.15-21
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  • 2005
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  • 1225-1763(pISSN)
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  • 2234-3024(eISSN)
대한수학회 (Korean Mathematical Society)
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A NOTE ON NULL DESIGNS OF DUAL POLAR SPACES

  • 발행 : 2005.01.01
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초록

Null designs on the poset of dual polar spaces are considered. A poset of dual polar spaces is the set of isotropic subspaces of a finite vector space equipped with a nondegenerate bilinear form, ordered by inclusion. We show that the minimum number of isotropic subspaces to construct a nonzero null t-design is ${\prod}^{t}_{i=0}(1+q^{i})$ for the types $B_N,\;D_N$, whereas for the case of type $C_N$, more isotropic subspaces are needed.

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참고문헌

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