no goals
ι : Type ?u.39791
𝕜 : Type u_2
E : Type u_1
inst✝⁵ : LinearOrderedField 𝕜
inst✝⁴ : AddCommGroup E
inst✝³ : Module 𝕜 E
inst✝² : TopologicalSpace E
inst✝¹ : TopologicalAddGroup E
inst✝ : ContinuousConstSMul 𝕜 E
s : Set E
hs : Convex 𝕜 s
a b : 𝕜
ha : 0 < a
hb : 0 ≤ b
hab : a + b = 1
⊢ interior (a • s) + closure (b • s) = interior (a • s) + b • s
rw [isOpen_interior.add_closure (b • s)]