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.20060417+ by Klaus Grue,