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feat: Add BetaAt uniqueness, FV preservation, and left redex-count bound - #800

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lengyijun wants to merge 2 commits into
leanprover:mainfrom
awesome-lambda-calculus:leftmost
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feat: Add BetaAt uniqueness, FV preservation, and left redex-count bound#800
lengyijun wants to merge 2 commits into
leanprover:mainfrom
awesome-lambda-calculus:leftmost

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@lengyijun

@lengyijun lengyijun commented Aug 14, 2026

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  1. Renaming BetaAt.le_countRedexesBetaAt.le_countRedexes_r

  2. new theorems : BetaAt.step_fv BetaAt.unique BetaAt.le_countRedexes_l Leftmost.steps_fv

@lengyijun

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A humble start of serious of pr

@lengyijun

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I have proved more, but I don't know to continue push in this pr, or create new pr ?

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