apply agreeOn_setMany_of_disjoint
ν : Type u_1
inst✝ : DecidableEq ν
τ : PropAssignment ν
xs : Finset ν
τ' : PropAssignment ν
⊢ agreeOn (↑xs)ᶜ (setMany τ xs τ') τ
case h
ν : Type u_1
inst✝ : DecidableEq ν
τ : PropAssignment ν
xs : Finset ν
τ' : PropAssignment ν
⊢ Disjoint (↑xs)ᶜ ↑xs