11 lines
211 B
Text
11 lines
211 B
Text
variables p q : Prop
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#check ¬(p → q)
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#check ¬p → q
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#check (¬p) → q
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#check ¬(p → q)
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#check p ↔ q
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#check ¬(p ↔ q)
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#check ¬p ↔ q
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#check (¬p) ↔ q
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#check (p → q) ↔ q
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#check p → (q ↔ q)
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