w_s
Selects a subset of the permutation when it is regarded as a list. It is important to note that the output may not be a valid permutation.
The indices should be 0-indexed.
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The source of this document is in /build/reproducible-path/macaulay2-1.25.05+ds/M2/Macaulay2/packages/Permutations/Documentation/operationsDocs.m2:80:0.