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Proof step 8 from proof int2bits-first (previous step)

sgn(bitsinvert(uint2bits(~ j)) +1) = false ' + bits, uint2bits(~ j) = false ' + true ' + bits0, false ∈ uint2bits(~ j), j < 0 ⊦

User applied rule insert equation

And obtained the following new goals

Proof step 9:
sgn(bitsinvert(false ' + true ' + bits0) +1) = false ' + bits, false ∈ false ' + true ' + bits0, j < 0 ⊦

Rule argument

pos: left 2 flags: discard

Additional information