SUBSCHEMES OF THE JOHNSON SCHEME

被引：4

作者：

MUZYCHUK, ME ^{[1
]}

机构：

[1] BAR ILAN UNIV,DEPT MATH & COMP SCI,IL-52900 RAMAT GAN,ISRAEL

来源：

EUROPEAN JOURNAL OF COMBINATORICS | 1992年 / 13卷 / 03期

关键词：

D O I：

10.1016/0195-6698(92)90023-S

中图分类号：

O1 [数学];

学科分类号：

0701 ; 070101 ;

摘要：

Let X = (X, {Ri}i=0d) and X ′= (X′, {R′i}i=0d′) be two association schemes defined on the same setX. We say thatX′is a subscheme ofXif each relationR′i is a union of someRi. The subscheme lattice of the Johnson schemeJ(n, m) is studied. We prove that it is trivial form ≥ 3n + 4 ≥ 13. © 1992 Academic Press Limited.

引用

页码：187 / 193

页数：7

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