define pyk of contraexample lemma as text unicode start of text unicode small c unicode small o unicode small n unicode small t unicode small r unicode small a unicode small e unicode small x unicode small a unicode small m unicode small p unicode small l unicode small e unicode space unicode small l unicode small e unicode small m unicode small m unicode small a unicode end of text end unicode text end text end define
define tex of contraexample lemma as text unicode start of text unicode newline unicode capital c unicode small o unicode small n unicode small t unicode small r unicode small a unicode end of text end unicode text end text end define
define statement of contraexample lemma as example theory infer ( ( ( true pair true ) math equal true ) infer absurdity ) end define
define proof of contraexample lemma as rule tactic end define
The pyk compiler, version 0.grue.20050603 by Klaus Grue,