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Proof step 2 from proof sum-positive (previous step)

Σ ints < 0, ∀ i. i ∈ ints → 0 ≤ i ⊦

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 3:
∀ i. i ∈ ints → 0 ≤ i ⊦ ¬ Σ ints < 0
Proof step 4:
¬(∀ i. i ∈ ints → 0 ≤ i), Σ ints < 0, ∀ i. i ∈ ints → 0 ≤ i ⊦

Rule argument

spec: inst: name: sum-not-ls-zero seq: ∀ i. i ∈ ints → 0 ≤ i ⊦ ¬ Σ ints < 0 subst: [ints] → [ints] flags: rewrite, current

Additional information

Used terms: ints