On functions of strengtht
On functions of strengtht
复制标题
论强度的函数
DOI:
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发表时间:
1983
期刊:
影响因子:
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通讯作者:
N. Singhi
中科院分区:
文献类型:
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作者:
M. Deza;P. Frankl;N. Singhi
AbstractFor a finite setX, a functionf:P(X) →Z is said to have strengtht if
$$sumlimits_{Aunderline{underline subset } B} {f(B) = 0} $$
for allA ∈P (X), |A|≦t. Supports of functions of strengtht define a matroid onP(X). We study the circuits in this matroid. Some other related problems are also discussed.