Logiweb aspects of prop lemma from contradiction in pyk

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The predefined "pyk" aspect

define pyk of prop lemma from contradiction as text unicode start of text unicode small p unicode small r unicode small o unicode small p unicode space unicode small l unicode small e unicode small m unicode small m unicode small a unicode space unicode small f unicode small r unicode small o unicode small m unicode space unicode small c unicode small o unicode small n unicode small t unicode small r unicode small a unicode small d unicode small i unicode small c unicode small t unicode small i unicode small o unicode small n unicode end of text end unicode text end text end define

The predefined "tex" aspect

define tex of prop lemma from contradiction as text unicode start of text unicode capital f unicode small r unicode small o unicode small m unicode capital c unicode small o unicode small n unicode small t unicode small r unicode small a unicode small d unicode small i unicode small c unicode small t unicode small i unicode small o unicode small n unicode end of text end unicode text end text end define