isCDG w
A permutation $p$ is Conca-De Negri-Gorla (CDG) if it avoids all of the following patterns: $13254$, $21543$, $214635$, $215364$, $215634$, $241635$, $315264$, and $4261735$.
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This method was ported over from the MatrixSchubert (missing documentation) package.
The object isCDG is a method function.
The source of this document is in /build/reproducible-path/macaulay2-1.25.06+ds/M2/Macaulay2/packages/Permutations/Documentation/patternAvoidanceDocs.m2:124:0.