| ⊦ band(i, band(i0, j)) = band(band(i, i0), j) |
⊦ bits2int(bitsand(int2bits(i), sgn(bitsand(int2bits(i0), int2bits(j))))) = bits2int(bitsand(sgn(bitsand(int2bits(i), int2bits(i0))), int2bits(j)))
Used simplifier rules: band-def: ⊦ band(i, j) = bits2int(bitsand(int2bits(i), int2bits(j)));%and-notempty-09: ⊦ bitsand(int2bits(i), int2bits(i0)) ≠ [];%bits ≠ [] ⊦ int2bits(bits2int(bits)) = sgn(bits);