define pyk of lemma plusAssociativity(R) as text unicode start of text unicode small l unicode small e unicode small m unicode small m unicode small a unicode space unicode small p unicode small l unicode small u unicode small s unicode capital a unicode small s unicode small s unicode small o unicode small c unicode small i unicode small a unicode small t unicode small i unicode small v unicode small i unicode small t unicode small y unicode left parenthesis unicode capital r unicode right parenthesis unicode end of text end unicode text end text end define
define tex of lemma plusAssociativity(R) as text unicode start of text unicode capital p unicode small l unicode small u unicode small s unicode capital a unicode small s unicode small s unicode small o unicode small c unicode small i unicode small a unicode small t unicode small i unicode small v unicode small i unicode small t unicode small y unicode left parenthesis unicode capital r unicode right parenthesis unicode end of text end unicode text end text end define
define statement of lemma plusAssociativity(R) as system Q infer all metavar var fx end metavar indeed all metavar var fy end metavar indeed all metavar var fz end metavar indeed R( metavar var fx end metavar ) ++ R( metavar var fy end metavar ) ++ R( metavar var fz end metavar ) = R( metavar var fx end metavar ) ++ R( metavar var fy end metavar ) ++ R( metavar var fz end metavar ) end define
define proof of lemma plusAssociativity(R) as rule tactic end define
The pyk compiler, version 0.grue.20060417+ by Klaus Grue,