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Proof step 5 from proof uint2bits-sgn-01 (previous step)

uint2bits(j) = false ' + true ' + bits, false ∈ uint2bits(j), 0 ≤ j ⊦ sgn(uint2bits(j)) = uint2bits(j)

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;