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- W2019935404 abstract "2. Notation The letters a, b, c, d, x, y, z denote finite sets of non-negative integers, all other lower-case letters denote non-negative integers. If fc I, then [k, I) denotes the set {k,k+l,k+2,...,l-l} = {*: fc < « < Q. The obliteration operator serves to remove from any system of elements the element above which it is placed. Thus [k,I) = {k,k-{-l,...,fy. The cardinal of o is a inclusion (in the wide sense), union, difference, and intersection of sets are denoted by o c b, a--b, a—b, ab respectively, and a—b = a—ab for all a, b. By 8(k,l,m) we denote the set of all systems (ao,av...,dn) such that avc[0,m); av 1 (v < »)," @default.
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- W2019935404 date "1961-01-01" @default.
- W2019935404 modified "2023-10-18" @default.
- W2019935404 title "INTERSECTION THEOREMS FOR SYSTEMS OF FINITE SETS" @default.
- W2019935404 doi "https://doi.org/10.1093/qmath/12.1.313" @default.
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