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Syntax Definition wvd2 38793
Description: Syntax for a 2-hypothesis virtual deduction. (New usage is discouraged.)
Hypotheses
Ref Expression
wph wff ph
wps wff ps
wch wff ch
Assertion
Ref Expression
wvd2 wff (. ph ,. ps ->. ch ).
See definition df-vd2 38794 for more information.
Colors of variables: wff setvar class
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