RedS = reducedSlackMatrix(d, S)
RedS = reducedSlackMatrix S
RedS = reducedSlackMatrix V
Given a (symbolic) slack matrix of a polytope or of a matroid, or a list of vertex coordinates, matroid vectors, facet labels, or cone generators, it reduces it by removing the columns corresponding to simplicial facets outside of a flag.
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The object reducedSlackMatrix is a method function with options.