fact: Definition gal_big_prodv_cast n (k : {subfield L}) (K : 'I_n -> {subfield L}) (galK : forall i, galois k (K i)) := [morphism of morphm (gal_big_prodv_cast_morphic galK)].
imports: HB(structures) mathcomp(all_ssreflect all_fingroup all_algebra) mathcomp(all_solvable all_field) Abel(various char0)