2015-03-26 01:04:52 +00:00
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import data.nat
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open nat
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2015-07-07 23:37:06 +00:00
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attribute nat.add [unfold 2]
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attribute nat.rec_on [unfold 2]
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2015-03-26 01:04:52 +00:00
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2015-04-28 00:46:13 +00:00
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infixl `;`:15 := tactic.and_then
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2015-03-26 01:04:52 +00:00
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namespace tactic
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definition then_all (t1 t2 : tactic) : tactic :=
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focus (t1 ; all_goals t2)
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end tactic
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2015-04-28 00:46:13 +00:00
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tactic_infixl `;;`:15 := tactic.then_all
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2015-03-26 01:04:52 +00:00
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open tactic
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example (a b c : nat) : (a + 0 = 0 + a ∧ b + 0 = 0 + b) ∧ c = c :=
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begin
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apply and.intro,
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2015-10-13 22:39:03 +00:00
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apply and.intro ;; (state; rewrite zero_add),
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2015-03-26 01:04:52 +00:00
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apply rfl
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end
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