Propositional Logic Translation












0












$begingroup$


I am trying to convert the following into propositional logic in order to construct a semantic tableaux:



If Mark goes to the party, then so does Pat. John or Pat will go to
the party. John will not go to the party unless Steve goes to the party.
Steve does not go the party and neither does Mark. Therefore, Pat does
go to the party.



What I have gotten so far is $M implies P$, $J lor P$,$neg S land neg M$,$neg P$



I am not sure how to translate "John will not go to the party unless Steve goes to the party."



Thanks in advance for any help given!










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$endgroup$








  • 1




    $begingroup$
    "Unless" means "if not".
    $endgroup$
    – David
    Dec 18 '18 at 2:22










  • $begingroup$
    So would it be !J implies !S?
    $endgroup$
    – martinhynesone
    Dec 18 '18 at 2:28










  • $begingroup$
    Thank you for the help!!
    $endgroup$
    – martinhynesone
    Dec 18 '18 at 2:30










  • $begingroup$
    @martinhynesone sorry, I had that wrong ... it ahould be $neg S rightarrow neg J$
    $endgroup$
    – Bram28
    Dec 18 '18 at 2:31
















0












$begingroup$


I am trying to convert the following into propositional logic in order to construct a semantic tableaux:



If Mark goes to the party, then so does Pat. John or Pat will go to
the party. John will not go to the party unless Steve goes to the party.
Steve does not go the party and neither does Mark. Therefore, Pat does
go to the party.



What I have gotten so far is $M implies P$, $J lor P$,$neg S land neg M$,$neg P$



I am not sure how to translate "John will not go to the party unless Steve goes to the party."



Thanks in advance for any help given!










share|cite|improve this question









$endgroup$








  • 1




    $begingroup$
    "Unless" means "if not".
    $endgroup$
    – David
    Dec 18 '18 at 2:22










  • $begingroup$
    So would it be !J implies !S?
    $endgroup$
    – martinhynesone
    Dec 18 '18 at 2:28










  • $begingroup$
    Thank you for the help!!
    $endgroup$
    – martinhynesone
    Dec 18 '18 at 2:30










  • $begingroup$
    @martinhynesone sorry, I had that wrong ... it ahould be $neg S rightarrow neg J$
    $endgroup$
    – Bram28
    Dec 18 '18 at 2:31














0












0








0





$begingroup$


I am trying to convert the following into propositional logic in order to construct a semantic tableaux:



If Mark goes to the party, then so does Pat. John or Pat will go to
the party. John will not go to the party unless Steve goes to the party.
Steve does not go the party and neither does Mark. Therefore, Pat does
go to the party.



What I have gotten so far is $M implies P$, $J lor P$,$neg S land neg M$,$neg P$



I am not sure how to translate "John will not go to the party unless Steve goes to the party."



Thanks in advance for any help given!










share|cite|improve this question









$endgroup$




I am trying to convert the following into propositional logic in order to construct a semantic tableaux:



If Mark goes to the party, then so does Pat. John or Pat will go to
the party. John will not go to the party unless Steve goes to the party.
Steve does not go the party and neither does Mark. Therefore, Pat does
go to the party.



What I have gotten so far is $M implies P$, $J lor P$,$neg S land neg M$,$neg P$



I am not sure how to translate "John will not go to the party unless Steve goes to the party."



Thanks in advance for any help given!







logic propositional-calculus






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share|cite|improve this question











share|cite|improve this question




share|cite|improve this question










asked Dec 18 '18 at 2:11









martinhynesonemartinhynesone

367




367








  • 1




    $begingroup$
    "Unless" means "if not".
    $endgroup$
    – David
    Dec 18 '18 at 2:22










  • $begingroup$
    So would it be !J implies !S?
    $endgroup$
    – martinhynesone
    Dec 18 '18 at 2:28










  • $begingroup$
    Thank you for the help!!
    $endgroup$
    – martinhynesone
    Dec 18 '18 at 2:30










  • $begingroup$
    @martinhynesone sorry, I had that wrong ... it ahould be $neg S rightarrow neg J$
    $endgroup$
    – Bram28
    Dec 18 '18 at 2:31














  • 1




    $begingroup$
    "Unless" means "if not".
    $endgroup$
    – David
    Dec 18 '18 at 2:22










  • $begingroup$
    So would it be !J implies !S?
    $endgroup$
    – martinhynesone
    Dec 18 '18 at 2:28










  • $begingroup$
    Thank you for the help!!
    $endgroup$
    – martinhynesone
    Dec 18 '18 at 2:30










  • $begingroup$
    @martinhynesone sorry, I had that wrong ... it ahould be $neg S rightarrow neg J$
    $endgroup$
    – Bram28
    Dec 18 '18 at 2:31








1




1




$begingroup$
"Unless" means "if not".
$endgroup$
– David
Dec 18 '18 at 2:22




$begingroup$
"Unless" means "if not".
$endgroup$
– David
Dec 18 '18 at 2:22












$begingroup$
So would it be !J implies !S?
$endgroup$
– martinhynesone
Dec 18 '18 at 2:28




$begingroup$
So would it be !J implies !S?
$endgroup$
– martinhynesone
Dec 18 '18 at 2:28












$begingroup$
Thank you for the help!!
$endgroup$
– martinhynesone
Dec 18 '18 at 2:30




$begingroup$
Thank you for the help!!
$endgroup$
– martinhynesone
Dec 18 '18 at 2:30












$begingroup$
@martinhynesone sorry, I had that wrong ... it ahould be $neg S rightarrow neg J$
$endgroup$
– Bram28
Dec 18 '18 at 2:31




$begingroup$
@martinhynesone sorry, I had that wrong ... it ahould be $neg S rightarrow neg J$
$endgroup$
– Bram28
Dec 18 '18 at 2:31










1 Answer
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1












$begingroup$

A statement '$P $ unless $Q$' typically translates to '$P$ if not $Q$', i.e. $neg Q rightarrow P$



Here is an example:



'You fail ($F$) the course unless you complete ($C$) all the HW's'



OK, so if someone does not complete all the HW's they will clearly fail the course: $neg C rightarrow F$



Ok, but will you pass the course if you do complete all the HW's? No, not necessarily .. you may also have to do well on the final, for example. So, we cannot say $C rightarrow neg F$ ... so it is not a biconditional.






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    $begingroup$

    A statement '$P $ unless $Q$' typically translates to '$P$ if not $Q$', i.e. $neg Q rightarrow P$



    Here is an example:



    'You fail ($F$) the course unless you complete ($C$) all the HW's'



    OK, so if someone does not complete all the HW's they will clearly fail the course: $neg C rightarrow F$



    Ok, but will you pass the course if you do complete all the HW's? No, not necessarily .. you may also have to do well on the final, for example. So, we cannot say $C rightarrow neg F$ ... so it is not a biconditional.






    share|cite|improve this answer











    $endgroup$


















      1












      $begingroup$

      A statement '$P $ unless $Q$' typically translates to '$P$ if not $Q$', i.e. $neg Q rightarrow P$



      Here is an example:



      'You fail ($F$) the course unless you complete ($C$) all the HW's'



      OK, so if someone does not complete all the HW's they will clearly fail the course: $neg C rightarrow F$



      Ok, but will you pass the course if you do complete all the HW's? No, not necessarily .. you may also have to do well on the final, for example. So, we cannot say $C rightarrow neg F$ ... so it is not a biconditional.






      share|cite|improve this answer











      $endgroup$
















        1












        1








        1





        $begingroup$

        A statement '$P $ unless $Q$' typically translates to '$P$ if not $Q$', i.e. $neg Q rightarrow P$



        Here is an example:



        'You fail ($F$) the course unless you complete ($C$) all the HW's'



        OK, so if someone does not complete all the HW's they will clearly fail the course: $neg C rightarrow F$



        Ok, but will you pass the course if you do complete all the HW's? No, not necessarily .. you may also have to do well on the final, for example. So, we cannot say $C rightarrow neg F$ ... so it is not a biconditional.






        share|cite|improve this answer











        $endgroup$



        A statement '$P $ unless $Q$' typically translates to '$P$ if not $Q$', i.e. $neg Q rightarrow P$



        Here is an example:



        'You fail ($F$) the course unless you complete ($C$) all the HW's'



        OK, so if someone does not complete all the HW's they will clearly fail the course: $neg C rightarrow F$



        Ok, but will you pass the course if you do complete all the HW's? No, not necessarily .. you may also have to do well on the final, for example. So, we cannot say $C rightarrow neg F$ ... so it is not a biconditional.







        share|cite|improve this answer














        share|cite|improve this answer



        share|cite|improve this answer








        edited Dec 19 '18 at 17:02

























        answered Dec 18 '18 at 2:52









        Bram28Bram28

        60.7k44590




        60.7k44590






























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