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Proof step 47 from proof equal-minus-one (previous step)

i ^ ~(j + 1) = ~ i, abs(i ^ ~(j + 1)) = 1, i + i ^ ~(j + 1) = 0, j < 0 ⊦ i = 0, i = ~1, j = 0

User applied rule insert equation

And obtained the following new goals

Proof step 48:
i ^ ~(j + 1) = ~ i, abs(~ i) = 1, i + ~ i = 0, j < 0 ⊦ i = 0, i = ~1, j = 0

Rule argument

pos: left 1 flags:

Additional information