4 commits

Author	SHA1	Message	Date
Leonardo de Moura	f13ca3cd9a	feat(library/tactic/contradiction_tactic): handle (h1 : p) and (h2 : not p) hypotheses in the contradiction tactic	2015-05-25 10:29:51 -07:00
Leonardo de Moura	57ea660963	refactor(*): start process for eliminating of opaque definitions from the kernel ... see issue #576	2015-05-08 16:06:04 -07:00
Leonardo de Moura	210cae7d6c	fix(library/tactic): we must unfold untrusted macros when type checking intermediate results ... Example: before this commit, the file librata/data/list/perm.lean would not type check if the option -t 0 (trust level zero) was provided. Reason: the intermediate term contained a macro, and macros are not allowed at trust level zero.	2015-05-06 14:23:58 -07:00
Leonardo de Moura	9c8a63caec	feat(library/tactic): add 'contradiction' tactic ... see issue #500 Remark: this tactic also applies no_confusion to take care of a contradiction	2015-04-30 13:47:40 -07:00