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Proof step 11 from proof rm-vl-append-same (previous step)

eqent = eq-entry(m, lref0), ∀ n, lref. q0 + eq-entry(n, lref) ' - lref = q0 - lref ⊦ (lref0 = lref ⊃ q0 + eq-entry(n, lref0) ' - lref0;eqent ' + (q0 + eq-entry(n, lref) ' - lref)) = (lref0 = lref ⊃ q0 - lref0;eqent ' + (q0 - lref))

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 12:
∀ n, lref. q0 + eq-entry(n, lref) ' - lref = q0 - lref ⊦ (lref0 = lref ⊃ q0 + eq-entry(n, lref) ' - lref;eq-entry(m, lref0) ' + (q0 + eq-entry(n, lref) ' - lref)) = (lref0 = lref ⊃ q0 - lref;eq-entry(m, lref0) ' + (q0 - lref))

Proof step 11 from proof rm-vl-append-same (previous step)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Rule argument

Additional information