Propositional Logic: not-(A and B)

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  • Опубликовано: 4 ноя 2024

Комментарии • 9

  • @mateuszwyszynski4331
    @mateuszwyszynski4331 6 лет назад

    Using "either ... or ..." in the examples seems to me a little misleading, because in my opinion "either ... or ..." structure states that only one of the prepositions is true, but not both simultaneously:
    dictionary.cambridge.org/dictionary/english/either-or

  • @briansalzano4657
    @briansalzano4657 7 лет назад

    "Sam loves hotdogs but he doesn't like relish."
    (This sentence has a negation in it, but it's not a negation, but morgan's laws are about negations, so it's put in the form:
    ~(H.R)
    and ~(H.R) ~H V ~R
    so we take the conjunction and turn it into a disjunction of negations:
    Either Sam doesn't like hotdogs or he likes relish.
    Then put it in the form ~H V ~R:
    ~(Sam loves hot dogs) or ~(Sam doesn't like relish)
    Either Sam doesn't love hot dogs or Sam likes relish
    And thus...~(H.R) ~H V ~(~R)
    ..~(H.R) ~H v Relish
    The trick for me is to think "they're not equivalent statements but just turning a normal conjunction into a negation so that you can formulate the disjunction of negations to show one of morgan's laws.

  • @mgangtv2157
    @mgangtv2157 6 лет назад

    What do ya'll think of that new artist mgnocturnal or whatever trash or dope?

  • @UniversalPotentate
    @UniversalPotentate 11 лет назад

    What about "Neither/Nor" circumstances?
    What about Either (not A) and/or (not B)?
    Aren't these distinct cases which also contradict a compound claim?

    • @briansalzano4657
      @briansalzano4657 7 лет назад

      I think neither/nor refers to "both not" so it would be in the form ~A . ~B which would be equivalent to ~(AVB) which is the other rule of morgan's laws not addressed here. If you look at the truth tables for ~(AVB) and ~A. ~B they both have the same pattern but the former is a negation of a disjunction but the latter is a conjuction of negations so you have to think of the first one as negating the truth table of the disjunction.

  • @jake______
    @jake______ 3 года назад +1

    The answer shouldn't be "Sam doesn't LIKE hotdogs or he likes relish" it should be "Sam doesn't LOVE hotdogs to he likes relish".

    • @booper6770
      @booper6770 5 месяцев назад

      This is so petty. It's just a spelling mistake.

  • @maratzhusupbekov1932
    @maratzhusupbekov1932 2 года назад

    Man it didn’t make any sense to me at all😂😂😂😂gotta revise the shit again

  • @danielxiong5069
    @danielxiong5069 5 лет назад

    sSSSS