INTERSECTION THEOREMS FOR SYSTEMS OF FINITE SETS
INTERSECTION THEOREMS FOR SYSTEMS OF FINITE SETS
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 …