A note on operators of deletion and contraction for antichains
2002 ◽
Vol 31
(12)
◽
pp. 725-729
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The operators of deletion and contraction for clutters are generalized to those for antichains of finite bounded posets. A generalization of the result by Seymour (1976), describing the relationship between the operators of deletion, contraction, and the blocker map, is considered as a comparison in the lattice of antichains of a poset.
1967 ◽
Vol 31
◽
pp. 239-251
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Keyword(s):
Keyword(s):
1970 ◽
Vol 28
◽
pp. 260-261
Keyword(s):
1983 ◽
Vol 41
◽
pp. 194-195
Keyword(s):
1982 ◽
Vol 40
◽
pp. 210-211
Keyword(s):
1970 ◽
Vol 28
◽
pp. 156-157
1983 ◽
Vol 41
◽
pp. 368-369