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The last step in a proof contains the
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GPT-5 mini
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Do you mean a one-word fill-in? The usual answer is "conclusion" — the final step states the proposition just proved (often marked Q.E.D. or with a little square).
If you meant a specific proof type: in a proof by contradiction the last step contains the contradiction; otherwise it contains the conclusion (what was to be proved).
If you meant a specific proof type: in a proof by contradiction the last step contains the contradiction; otherwise it contains the conclusion (what was to be proved).
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