Logiweb aspects of lemma nonzeroProduct(2) in pyk

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The predefined "pyk" aspect

define pyk of lemma nonzeroProduct(2) 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 n unicode small o unicode small n unicode small z unicode small e unicode small r unicode small o unicode capital p unicode small r unicode small o unicode small d unicode small u unicode small c unicode small t unicode left parenthesis unicode two unicode right parenthesis unicode end of text end unicode text end text end define

The predefined "tex" aspect

define tex of lemma nonzeroProduct(2) as text unicode start of text unicode capital n unicode small o unicode small n unicode small z unicode small e unicode small r unicode small o unicode capital p unicode small r unicode small o unicode small d unicode small u unicode small c unicode small t unicode left parenthesis unicode two 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 nonzeroProduct(2) as system Q infer all metavar var x end metavar indeed all metavar var y end metavar indeed not0 metavar var x end metavar * metavar var y end metavar = 0 infer not0 metavar var y end metavar = 0 end define

The user defined "the proof aspect" aspect

define proof of lemma nonzeroProduct(2) as lambda var c dot lambda var x dot proof expand quote system Q infer all metavar var x end metavar indeed all metavar var y end metavar indeed metavar var y end metavar = 0 infer lemma eqMultiplicationLeft modus ponens metavar var y end metavar = 0 conclude metavar var x end metavar * metavar var y end metavar = metavar var x end metavar * 0 cut lemma x*0=0 conclude metavar var x end metavar * 0 = 0 cut lemma eqTransitivity modus ponens metavar var x end metavar * metavar var y end metavar = metavar var x end metavar * 0 modus ponens metavar var x end metavar * 0 = 0 conclude metavar var x end metavar * metavar var y end metavar = 0 cut all metavar var x end metavar indeed all metavar var y end metavar indeed 1rule deduction modus ponens all metavar var x end metavar indeed all metavar var y end metavar indeed metavar var y end metavar = 0 infer metavar var x end metavar * metavar var y end metavar = 0 conclude metavar var y end metavar = 0 imply metavar var x end metavar * metavar var y end metavar = 0 cut not0 metavar var x end metavar * metavar var y end metavar = 0 infer prop lemma mt modus ponens metavar var y end metavar = 0 imply metavar var x end metavar * metavar var y end metavar = 0 modus ponens not0 metavar var x end metavar * metavar var y end metavar = 0 conclude not0 metavar var y end metavar = 0 end quote state proof state cache var c end expand end define