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Thread: Elimination argument

  1. #1
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    Elimination argument

    Give a truth table which shows that the Elimination argument
    p V q p
    qis a valid logical argument.

    ok so this is what I've done

    p..q......pvq.......p.......q

    T..T..........T...........F.........T
    T..F..........T...........F.........F
    F..T..........T...........T.........T
    F..F..........F...........T..........F

    In the Premises the critical row is the 3rd in each of the other rows we have false values on the premises so by eliminating them we are left with the 3rd row proving a logical argument of
    q.
    Is this correct ? thanks
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  2. #2
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    Re: Elimination argument

    Quote Originally Posted by bee77 View Post
    Give a truth table which shows that the Elimination argument
    p V q p ∴ q is a valid logical argument.
    Here is your argument: $[(p\vee q)\wedge \neg p]\to q.$

    HERE is the truthtable. you must fill in the gaps.
    Thanks from bee77
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    Re: Elimination argument

    Thanks Plato I obviously missed the ∧ symbol and the -> makes sense
    cheers
    Last edited by bee77; Aug 22nd 2017 at 08:51 PM.
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    Re: Elimination argument

    p..q......pvq.......p........|(.pvq )∧ p|....|(pvq) ∧ p|->q

    T..T..........T...........F...........F........... ........T............
    T..F..........T...........F...........T........... ........T............
    F..T..........T...........T...........T........... ........T...........
    F..F..........F...........T...........F........... ........T .......... Tautology
    Last edited by bee77; Aug 22nd 2017 at 09:10 PM.
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