1. Inclusion–exclusion principleIn combinatorics, the inclusion–exclusion principle (also known as the sieve principle) is an equation relating the sizes of two sets and their union. It states that if A and B are two (finite) sets, then The meaning of the statement is that the number of elements in the union of the two sets is the sum of the elements in each set, respectively, minus the number of elements that are in both.
Read “Inclusion–exclusion principle” on English Wikipedia
Read “包除原理” on Japanese Wikipedia
Read “Inclusion–exclusion principle” on DBpedia
Read “Inclusion–exclusion principle” on English Wikipedia
Read “包除原理” on Japanese Wikipedia
Read “Inclusion–exclusion principle” on DBpedia
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