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Results tagged with tactic
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A tactic is a command or instruction for constructing a formal proof by applying a common proof technique. For questions about high-level techniques for constructing proofs, use the tag (strategy).
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How do we resolve metavariables that appear in hypotheses and targets in Lean?
Arguably, the most direct way (type theoretically or tactically) to do this is to find the goal that corresponds to ?m_1 and fill it. In your example, the goals look like this after apply R_trans (con …
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