mathlib3

7bdb6b39 - feat(algebra/module/linear_map,linear_algebra/alternating,linear_algebra/multilinear/basic): no_zero_smul_divisors instances (#10234)

feat(algebra/module/linear_map,linear_algebra/alternating,linear_algebra/multilinear/basic): no_zero_smul_divisors instances (#10234) Add `no_zero_smul_divisors` instances for linear, multilinear and alternating maps, given such instances for the codomain of the maps. This also adds some missing `coe_smul` lemmas on these types. Co-authored-by: Eric Wieser <wieser.eric@gmail.com> Co-authored-by: Eric Wieser <wieser.eric@gmail.com>