17 lines
371 B
Text
17 lines
371 B
Text
constant p : nat → Prop
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open tactic
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set_option pp.all true
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definition ex (a b c : nat) (H : p c) : a = b → p a → p b :=
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by do intro `H1, intro `H2,
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get_local `a >>= subst,
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trace_state,
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assumption
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print ex
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example (a b c : nat) (H : p c) : a = b → p a → p b :=
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by do intros,
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get_local `b >>= subst,
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trace_state,
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assumption
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