Exercise logic.propositional.dnf.unicode

Description
Proposition to DNF (unicode support)

¬(q → p) ↔ ((r ∧ s) ∨ (¬r ∧ ¬s) ∨ ¬s)

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• allfirsts (2)
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• derivation
• microsteps

Path 1

path	[0, 1, 3, 2, 2, 0, 1]
steps	7
major rules	1
active labels	dnf eliminateimplequiv