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Alexander Bentkamp 8c4b995a32 rename message to hint		2 years ago
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L09_Or.lean	rename message to hint	2 years ago
L33_Prime.lean	more levels.	2 years ago
L34_ExistsUnique.lean	more levels.	2 years ago
Lxx_Prime.lean	rename message to hint	2 years ago
Lxx_Tauto.lean	reorganise world Implication	2 years ago
Lxx_Tfae.lean	reorganise world Implication	2 years ago
Playground.lean	new levels.	2 years ago
xx_Functions.lean	levels: negation, nat-basics	2 years ago