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Proof step 1 from proof ls-inv-prefixn-ladrs (conclusion)

⊦ inv(groupblock(gndx0 + gndx1, lax0 + lax1, n)) → prefixn(# gndx0 + # gndx1, lax0 + lax1) = lax0 + lax1

System applied rule normalize

And obtained the following new goals

Proof step 2:
inv(groupblock(gndx0 + gndx1, lax0 + lax1, n)) ⊦ prefixn(# gndx0 + # gndx1, lax0 + lax1) = lax0 + lax1

Rule argument

Additional information