Logiweb aspects of lemma timesCommutativity(R) in pyk

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The predefined "pyk" aspect

define pyk of lemma timesCommutativity(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 t unicode small i unicode small m unicode small e unicode small s unicode capital c unicode small o unicode small m unicode small m unicode small u unicode small t 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

The predefined "tex" aspect

define tex of lemma timesCommutativity(R) as text unicode start of text unicode capital t unicode small i unicode small m unicode small e unicode small s unicode capital c unicode small o unicode small m unicode small m unicode small u unicode small t 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

The user defined "the statement aspect" aspect

define statement of lemma timesCommutativity(R) as system Q infer all metavar var fx end metavar indeed all metavar var fy end metavar indeed R( metavar var fx end metavar ) ** R( metavar var fy end metavar ) == R( metavar var fy end metavar ) ** R( metavar var fx end metavar ) end define

The user defined "the proof aspect" aspect

define proof of lemma timesCommutativity(R) as rule tactic end define