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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
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.
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页码:187 / 193
页数:7
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