Changes

Exercícios de Dedução Natural (view source)

14 bytes added , 18:02, 13 September 2020

-->

#<math>\varphi \land \psi \vdash \psi \land \varphi</math><!--

--><p>{{#ev:youtube|moh07B8dv2k|||||start=480&end=527&loop=1}}</p>

#<math>(\varphi \land \psi) \land \delta \vdash \varphi \land (\psi \land \delta)</math><!--

--><p>{{#ev:youtube|moh07B8dv2k|||||start=528&end=582&loop=1}}</p>

#<math>\alpha \vdash \alpha \land \alpha</math>

#<math>\alpha \land \beta, \gamma \land \delta \vdash \gamma \land \beta</math>

111

edits