define pyk of disjin2 as text unicode start of text unicode small d unicode small i unicode small s unicode small j unicode small i unicode small n unicode two unicode end of text end unicode text end text end define
define tex of disjin2 as text unicode start of text unicode newline unicode capital d unicode small i unicode small s unicode two unicode end of text end unicode text end text end define
define statement of disjin2 as system s infer all metavar var a end metavar indeed all metavar var b end metavar indeed metavar var b end metavar infer not metavar var a end metavar imply metavar var b end metavar end define
define proof of disjin2 as lambda var c dot lambda var x dot proof expand quote system s infer all metavar var a end metavar indeed all metavar var b end metavar indeed metavar var b end metavar infer lemma a one conclude metavar var b end metavar imply not metavar var a end metavar imply metavar var b end metavar cut rule mp modus ponens metavar var b end metavar imply not metavar var a end metavar imply metavar var b end metavar modus ponens metavar var b end metavar conclude not metavar var a end metavar imply metavar var b end metavar end quote state proof state cache var c end expand end define
The pyk compiler, version 0.grue.20060417+ by Klaus Grue,