14 lines
464 B
Text
14 lines
464 B
Text
exit
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-- import algebra.ordered_ring
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open tactic
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axiom Sorry : ∀ {A:Type}, A
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example {A : Type} [ordered_ring A] (a b c : A) (h₀ : c > 0) (h₁ : a > 1) (h₂ : b > 0) : a + b + c = 0 :=
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by do
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[x, y] ← match_target_subexpr `(λ x y : A, x + y) | failed,
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trace "------ subterms -------",
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trace x, trace y,
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(h, [z]) ← match_hypothesis `(λ x : A, x > 1) | failed,
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trace "--- hypothesis of the form x > 1 ---",
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trace h, trace z,
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refine `(Sorry)
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