2015-05-03 00:48:08 +00:00
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571.lean:6:2: error:invalid 'cases' tactic, 'Exists' can only eliminate to Prop
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proof state:
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P : ℕ → Prop,
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H : ∃ (n : ℕ), P n
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⊢ ℕ
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571.lean:7:0: error: don't know how to synthesize placeholder
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P : ℕ → Prop,
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H : ∃ (n : ℕ), P n
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⊢ ℕ
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2015-06-01 22:35:28 +00:00
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571.lean:7:0: error: failed to add declaration 'example' to environment, value has metavariables
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2015-05-03 00:48:08 +00:00
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remark: set 'formatter.hide_full_terms' to false to see the complete term
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λ (P : …) (H : …),
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?M_1
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