linearSubclass(M, N),
linearSubclass(M, K)
This function is provided by the package Matroids.
A modular cut K of the matroid M is determined by the collection of hyperplanes of M that belong to K, which is called the corresponding linear subclass. See isLinearSubclass for more details about linear subclasses. Given a list K of flats of M forming a modular cut, this function produces the corresponding linear subclass.
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Since every elementary quotient M of a matroid N determines a modular cut of flats of N, we can find the corresponding linear subclass as follows.
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The object linearSubclass is a method function with options.
The source of this document is in /build/reproducible-path/macaulay2-1.25.05+ds/M2/Macaulay2/packages/Matroids/doc-Matroids.m2:4221:0.