fact: Definition apply_deprecated (R : ringType) (A : lalgType R) (B : ringType) (s : R -> B -> B) (phAB : phant (A -> B)) := @LRMorphism.sort R A B s.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat div seq) mathcomp(choice fintype finfun bigop prime binomial)