perm_eq_nilF works on eqType now
Plactic rewriting throug increassing maps
Equality beetween different variants of RS maps
Free LR rule / need 3 lemmas
Cleanup in invseq
Ncomm lifting on multpoly
Tentative on the proof of FQSym product
Added invseqK lemma
Lifting Schur's fun product
Std words and tabs as finsets
Better sum_iota
Removed unused import + size_sumn
Added classes in congruencies
Listing of partition and Yamanouchi words + finTypes.
Stdwords as a combinatorial class
Fintypes for partitions Yamwords and stdtabs
Merge for invstd_is_std.
Enumeration of classes under RS
Merge branch 'poly'