What are obversion, conversion, and contraposition?

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  • Опубликовано: 16 дек 2024

Комментарии • 7

  • @dagimabebe3166
    @dagimabebe3166 3 года назад +2

    the last O meaning is the same as I part.i think it should be some S are non-p.

    • @SymbolicLogicLPL
      @SymbolicLogicLPL  3 года назад +1

      Hi, Dagim. Thanks! I thought I fixed that typo and re-uploaded the video. You are correct that the O-proposition is Some S are non-P.

    • @klamup
      @klamup 11 месяцев назад

      I've been hung up on that for about four hours. Among other things. I didn't watch the video or look at the comments, just referenced the 'Examples'. @3:14
      :|

  • @theophillalonde3568
    @theophillalonde3568 2 года назад +1

    I learn this in grade 9... It's hell

  • @sifatuljannatsayore2day768
    @sifatuljannatsayore2day768 2 года назад +1

    What is converted obversion?

    • @miawood8517
      @miawood8517 2 года назад +1

      Hi, sifatuljannat sayore2day! OK, suppose you see two "moves" in one, e.g., an exercise in which you're asked, "What is the obverse of a contraposed A-proposition?". Think about a two-step inference. In the case of the example I just mention, you first contrapose an A-proposition. Then you obvert the result. Does that make sense?
      Now let's look at your question: 'What is the converse of an obverted proposition?' The first thing you want to do is obvert the proposition. Next, you'll convert the result. Does that make sense?

    • @sifatuljannatsayore2day768
      @sifatuljannatsayore2day768 2 года назад

      @@miawood8517 got it