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Proof step 2 from proof mk-inj (previous step)

mklist(a, m) = mklist(b, n) ⊦ m = 0, a = b ∧ m = n

User applied rule structural induction

And obtained the following new goals

Proof step 3:
∀ a, b, n. mklist(a, m0) = mklist(b, n) → m0 = 0 ∨ a = b ∧ m0 = n, mklist(a, m0 +1) = mklist(b, n) ⊦ m0 +1 = 0, a = b ∧ m0 +1 = n

Rule argument

indvar: m

Additional information

Used simplifier rules: nat freely generated by 0, +1;;