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Proof step 5 from proof inbyte-bib (previous step)

b2i(i2b(i)) = i ⊦ ¬ i < ~128 ∧ ¬ 127 < i

User applied rule insert equation

And closed the goal!

Rule argument

pos: left 1 flags: rotate, discard

Additional information

Used simplifier rules: byte-nls: ⊦ ¬ b2i(by) < ~128;%byte-gr-127: ⊦ ¬ 127 < b2i(by);