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LeanCourse.MIL.C09_Linear_Algebra.S02_Subspaces

def preimage {K : Type u_1} [Field K] {V : Type u_2} [AddCommGroup V] [Module K V] {W : Type u_3} [AddCommGroup W] [Module K W] (φ : V →ₗ[K] W) (H : Submodule K W) :
Equations
  • preimage φ H = { carrier := ⇑φ ⁻¹' ↑H, add_mem' := ⋯, zero_mem' := ⋯, smul_mem' := ⋯ }
Instances For