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Proof step 1 from proof coef-neg (conclusion)

⊦ j < 0 → binom_coef(i, j) = 0

Heuristic simplifier applied rule simplifier

And closed the goal!

Rule argument

Additional information

Used simplifier rules: coef-eq-zero: ⊦ binom_coef(i, j) = 0 ↔ j < 0 ∨ i < j;%zero-gels-01: ⊦ i < 0 ∧ 0 ≤ j → i < j; from specification int-abs