Commit 2023-10-19 20:25 267b8cb1
View on Github →feat: natDegree_sub_C (#7776)
Adds degree_sub_C, natDegree_sub_C
, analogous to ..._add_C
.
Also relocates C_neg
and C_sub
to Basic.lean
(where C_add
is) so that the new lemmas can be in the same file as their add
counterparts.