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Proof step 2 from proof euler-phi-prime (previous step)

prime(i) ⊦ i = euler-phi(i) + 1

User applied rule insert rewrite lemma

And obtained the following new goals

Rule argument

spec: inst: name: euler-phi-def seq: ⊦ euler-phi(i) = n→i(# coprimes(i)) subst: [i] → [i] flags: rewrite, current

Additional information

Used terms: i