no goals
𝕜 : Type ?u.14771
E : Type ?u.14774
F : Type ?u.14777
G : Type ?u.14780
H : Type u_1
inst✝¹ : NormedAddCommGroup H
inst✝ : InnerProductSpace ℝ H
s✝ t : Set H
x : H
s : Set H
⊢ innerDualCone (insert x s) = innerDualCone {x} ⊓ innerDualCone s
rw [insert_eq, innerDualCone_union]