6 Commits (eff64d971398ba97f9e9b5cd483318c984435a53)

Author	SHA1	Message	Date
Jon Eugster	e282396a8e	more levels.	2 years ago
Jon Eugster	90540b158f	new levels.	2 years ago
Jon Eugster	9d1a591670	changes to levels	2 years ago
Jon Eugster	420f913e69	reorganise world Implication	2 years ago
Jon Eugster	04c0466fa4	update to lean nightly 22-12-05	2 years ago
Jon Eugster	87f943a08c	levels: negation, nat-basics	2 years ago