isPositivelyOriented M
This function determines whether a matroid is positively oriented, using a theorem of da Silva (which checks whether any disjoint circuit-cocircuit pair is non-crossing).
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The object isPositivelyOriented is a method function.
The source of this document is in /build/reproducible-path/macaulay2-1.25.05+ds/M2/Macaulay2/packages/Matroids/doc-Matroids.m2:2109:0.