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Exercícios de Dedução Natural
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Revision as of 02:36, 19 September 2020
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02:36, 19 September 2020
→\vdash (\alpha \to \beta) \lor (\beta \to \alpha), via terceiro excluído
<!---->{{#ev:youtube|9BdeXjhyJWs|||||start=45}}
==== <math>\vdash (\alpha \to \beta) \lor (\beta \to \alpha)</math>, via terceiro excluído ====
<!---->{{#ev:youtube|9BdeXjhyJWs|||||start=
423
413
}}
===Derivabilidade de regras===
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