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Proof step 23 from proof fillsgn-rec (previous step)

0 ≤ bytes2int(by ' + bytes0) ⊦ mklist(i2b(0), n + 1) = (¬ 0 ≤ b2i(by) ⊃ i2b(~1);i2b(0)) ' + mklist(i2b(0), n), n = 0

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 24:
⊦ 0 ≤ bytes2int(bytes) ↔ bytes = [] ∨ 0 ≤ b2i(bytes.first)
Proof step 25:
by ' + bytes0 = [] ∨ 0 ≤ b2i((by ' + bytes0).first) ⊦ mklist(i2b(0), n + 1) = (¬ 0 ≤ b2i(by) ⊃ i2b(~1);i2b(0)) ' + mklist(i2b(0), n), n = 0

Rule argument

name: bytes2int-pos rotate: F subst: [bytes] → [by ' + bytes0]

Additional information

Used terms: by ' + bytes0