SparsePolynomialCoercionHelpers(R, VarSet1, VarSet2)

multpoly.spad line 775 [edit on github]

• R: Ring

• VarSet1: OrderedSet

• VarSet2: OrderedSet

This package contains a function which speeds up coercion in an important special case.

remap_variables: (SparseMultivariatePolynomial(R, VarSet1), List VarSet1, List VarSet2) -> SparseMultivariatePolynomial(R, VarSet2)

remap_variables(p, lv1, lv2) replaces corresponding variables from l1 by variables from lv2. Assumes that lv1 and lv2 have the same length and that p has variables in lv1.