mathlib

5694309f - feat(algebra/algebra/basic algebra/module/basic): add 3 lemmas m • (1 : R) = ↑m (#7094)

feat(algebra/algebra/basic algebra/module/basic): add 3 lemmas m • (1 : R) = ↑m (#7094) Three lemmas asserting `m • (1 : R) = ↑m`, where `m` is a natural number, an integer or a rational number. Zulip: https://leanprover.zulipchat.com/#narrow/stream/113489-new-members/topic/.60smul_one_eq_coe.60 Co-authored-by: Anne Baanen <Vierkantor@users.noreply.github.com>