26 lines
382 B
Text
26 lines
382 B
Text
Variable a : Bool
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Variable b : Bool
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-- Conjunctions
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Show a && b
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Show a && b && a
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Show a /\ b
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Show a ∧ b
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Show (and a b)
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Show and a b
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-- Disjunctions
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Show a || b
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Show a \/ b
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Show a ∨ b
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Show (or a b)
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Show or a (or a b)
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-- Simple Formulas
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Show a => b => a
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Check a => b
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Eval a => a
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Eval true => a
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-- Simple proof
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Axiom H1 : a
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Axiom H2 : a => b
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Check @MP
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Show MP H2 H1
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Check MP H2 H1
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