Warning
Lean 3 and Mathlib 3 are no longer actively maintained. It is strongly recommended that you use mathlib4 for Lean 4 instead.
(If you need to read the old README.md, please see OLD_README.md.)
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GitHub - leanprover-community/mathlib3: Lean 3's obsolete mathematical components library: please use mathlib4
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Lean 3's obsolete mathematical components library: please use mathlib4
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