6 Commits (ecc9a488a20094adf97840a4ba661e25edf73e90)

Author	SHA1	Message	Date
Jon Eugster	e282396a8e	more levels.	3 years ago
Jon Eugster	90540b158f	new levels.	3 years ago
Jon Eugster	9d1a591670	changes to levels	3 years ago
Jon Eugster	420f913e69	reorganise world Implication	3 years ago
Jon Eugster	04c0466fa4	update to lean nightly 22-12-05	4 years ago
Jon Eugster	87f943a08c	levels: negation, nat-basics	4 years ago