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Proof step 14 from proof uint2bits-sgn (previous step)

uint2bits(i) = false ' + true ' + bits, 0 < i, false ∈ uint2bits(i) ⊦ sgn(uint2bits(i)) = uint2bits(i)

User applied rule insert equation

And closed the goal!

Rule argument

pos: left 1 flags: discard

Additional information

Used simplifier rules: ⊦ sgn(false ' + true ' + bits) = false ' + true ' + bits;% ⊦ (bits + bits0) + bits1 = bits + bits0 + bits1;% ⊦ bits + bits0 = bits + bits1 ↔ bits0 = bits1;