Commit 2022-01-24 21:01 9e799a08
View on Github →feat(algebra/pointwise): Scalar multiplication lemmas (#11486)
This proves a bunch of lemmas about pointwise scalar multiplication of sets, moves has_vsub
to algebra.group.defs
and pointwise vsub
lemmas to algebra.pointwise
.
I'm also adding a few sections because having {s t : set α}
is nice for multiplication but not for scalar multiplication.