Results are out! Find what you Get quick advice or join the chat

Unlock these great extras with your FREE membership

  • One-on-one advice about results day and Clearing
  • Free access to our personal statement wizard
  • Customise TSR to suit how you want to use it

Possibility in modal logic

Announcements Posted on
Had your SQA results? Find your uni forum to get talking to other applicants, existing students and your future course-mates 04-08-2015
Competition: win a karting session for you and seven mates! 24-07-2015
  1. Offline

    Does anyone else find it unreasonable to have ◊P in modal logic?
  2. Offline

    yeah it is totally unreasonable !
  3. Offline

    (Original post by see-are)
    yeah it is totally unreasonable !
    I should make a fb page on this!
  4. Offline

    Modal Logic is hard to understand :sad:
  5. Offline

    (Original post by Person1001)
    Does anyone else find it unreasonable to have ◊P in modal logic?
    Just read about it in wiki. Why is it unreasonable? Would it have any use without that?
  6. Offline

    (Original post by viriol)
    Just read about it in wiki. Why is it unreasonable? Would it have any use without that?
    Either P or 'P - nothing is possible P.
  7. Offline

    of course there are different forms of construal of the possibility operator, but you have to start somewhere if you want to do aletheic logic.
  8. Offline

    I know nothing about formal logic, but as far as I can tell you're questioning whether the possibility is a meaningfull predicate--am I right? It obviously doesn't behave in the same way as normal predicates; but could not propositions about possibility be reduced to conditional propositions about existence?


Submit reply


Thanks for posting! You just need to create an account in order to submit the post
  1. this can't be left blank
    that username has been taken, please choose another Forgotten your password?
  2. this can't be left blank
    this email is already registered. Forgotten your password?
  3. this can't be left blank

    6 characters or longer with both numbers and letters is safer

  4. this can't be left empty
    your full birthday is required
  1. By joining you agree to our Ts and Cs, privacy policy and site rules

  2. Slide to join now Processing…

Updated: July 23, 2012
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

SQA students: did you get the results you wanted today?
Results and Clearing

SQA results chat

Come talk about your results here

new on tsr

Indian? Join the society here

Take part in the chat and make friends

Useful resources

Think you'll be in clearing or adjustment?

Hear direct from unis that want to talk to you

Get email alerts for university course places that match your subjects and grades. Just let us know what you're studying.

Quick reply
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.