no goals
𝕜 : Type ?u.369584
G : Type u_1
H : Type ?u.369590
inst✝⁴ : MeasurableSpace G
inst✝³ : MeasurableSpace H
inst✝² : Group G
inst✝¹ : MeasurableMul G
μ : Measure G
inst✝ : IsMulLeftInvariant μ
g : G
A : Set G
⊢ ↑↑(Measure.map (fun h => g * h) μ) A = ↑↑μ A
rw [map_mul_left_eq_self μ g]