Theorem: Etch.Verification.Stream.eval_invalid (Etch/StreamFusion/Proofs/StreamProof.lean)

State before:
ι : Type
α : Type u_1
a b s✝ : Stream ι α
inst✝² : Preorder ι
inst✝¹ : AddZeroClass α
s : Stream ι α
inst✝ : IsBounded s
q : s.σ
h : ¬s.valid q = true
⊢ eval s q = 0
Tactic:
rwa [Stream.eval, dif_neg]
State after:
no goals