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Informally, an algorithm is a set of explicit instructions used to solve a problem (e.g. Euclid's algorithm for computing the greatest common divisor of two integers). For more specific questions on algorithms, this tag may be used in conjunction with the approximation-algorithms, algorithmic-randomness and algorithmic-topology tags.

5 votes
1 answer
194 views

Enumerating antichains modulo permutation

I encountered the following combinatorics problem in my research, and I'd like to know if there is a reference or an easy solution for such a problem. Given a partially ordered set $\mathscr P$, an a …