29 lines
684 B
Text
29 lines
684 B
Text
theorem ex1 (p q r : Prop) (h1 : p ∨ q) (h2 : p → q) : q :=
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have : q := by -- Error here
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skip
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by skip -- Error here
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skip
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theorem ex2 (p q r : Prop) (h1 : p ∨ q) (h2 : p → q) : q :=
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have : q := by {
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skip
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} -- Error here
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by skip -- Error here
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skip
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theorem ex3 (p q r : Prop) (h1 : p ∨ q) (h2 : p → q) : q := by
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cases h1
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{ skip
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skip } -- Error here
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{ skip
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skip } -- Error here
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theorem ex4 (p q r : Prop) (h1 : p ∨ q) (h2 : p → q) : q := by
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first | done | apply ex3 p q r h1 h2
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theorem ex5 (p q r : Prop) (h1 : p ∨ q) (h2 : p → q) : q := by
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cases h1
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· skip -- Error here
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skip
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· skip -- Error here
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skip
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