3 comments

  • Sunday, Dec 17 2017

    @akikookmt881 said:

    Tell me if I am translating them into lawgic properly:

    No x is y = x ---->/y

    This is correct.

    X is not y = x ------>/y

    I think it depends on the context. I think if it means that X is always not Y, then this is correct.

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  • Sunday, Dec 17 2017

    ~X-->Y

    X-->~Y

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  • Sunday, Dec 17 2017

    They are the same, but no x is y will usually have x refer to a group of things.

    No aligator ate Jim. A-->¬J

    Sally's pet is an alligator. S-->A

    You then combine to get Sally's pet didn't eat Jim or S-->¬J

    In the other case, x is not y you are just told Sally's pet didn't eat Jim and immediately translate it to S-->¬J. You never get the information that no other gators ate Jim.

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