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Proof step 6 from proof prefixpoint (previous step)

μ(f) ⊆ S, f(S) ⊆ S, monotone(f) ⊦ f(μ(f)) ⊆ μ(f), f(μ(f)) ⊆ S

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 7:
⊦ monotone(f) ↔ (∀ S, S0. S ⊆ S0 → f(S) ⊆ f(S0))
Proof step 8:
μ(f) ⊆ S, f(S) ⊆ S, ∀ S, S0. S ⊆ S0 → f(S) ⊆ f(S0) ⊦ f(μ(f)) ⊆ μ(f), f(μ(f)) ⊆ S

Rule argument

spec: inst: name: monotone-def seq: ⊦ monotone(f) ↔ (∀ S, S0. S ⊆ S0 → f(S) ⊆ f(S0)) subst: [f] → [f] flags: rewrite, current

Additional information

Used terms: f