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Proof step 1 from proof valid-eraseq-prev-erasing (conclusion)

m < # wlar ⊦ m1 < m ∧ valid-eraseq(subarray(wlar, 0, m), q) → valid-eraseq(subarray(wlar[m, wl-entry(m0, used)][m1, wl-entry(m2, erasing)], 0, m + 1), q + eq-entry(m1, lref) ')

System applied rule normalize

And obtained the following new goals

Proof step 2:
m1 < m, m < # wlar, valid-eraseq(subarray(wlar, 0, m), q) ⊦ valid-eraseq(subarray(wlar[m, wl-entry(m0, used)][m1, wl-entry(m2, erasing)], 0, m + 1), q + eq-entry(m1, lref) ')

Proof step 1 from proof valid-eraseq-prev-erasing (conclusion)

System applied rule normalize

And obtained the following new goals

Rule argument

Additional information