Hey there! Sign in to join this conversationNew here? Join for free
    • Thread Starter
    Offline

    15
    ReputationRep:
    Q9 - http://www.dpmms.cam.ac.uk/site2002/...ogic2010-1.pdf

    I'm not asking for an answer, rather how is that true?

    for example, why can we not have valuations v_n that are zero except for v_n (t_n) = 1 ?

    then certainly the n cannot be bounded by N, since v_(N+1) would be zero on all of {t_1, ..., t_N}...
    Offline

    1
    ReputationRep:
    (Original post by Chewwy)
    Q9 - http://www.dpmms.cam.ac.uk/site2002/...ogic2010-1.pdf

    I'm not asking for an answer, rather how is that true?

    for example, why can we not have valuations v_n that are zero except for v_n (t_n) = 1 ?

    then certainly the n cannot be bounded by N, since v_(N+1) would be zero on all of {t_1, ..., t_N}...
    It follows quickly from noting that V_n is 0 E R
    moreover the bijection of the above can cause subjection by making an inspection on the assumption that the above can cause an inflammation which can cause rejection from a interjection
    • Wiki Support Team
    Offline

    14
    ReputationRep:
    Wiki Support Team
    You haven't read the question properly. For every valuation v we must have one of these t_n being true. This puts a restriction on t_n.
    • Wiki Support Team
    Offline

    14
    ReputationRep:
    Wiki Support Team
    Here's a hint, but it might be nonsense, because I haven't thought about the question much...

    Spoiler:
    Show
    Try and build a valuation v with v(t_i) = 0 for all i recursively: if possible, set v(t_1) = 0 (if not, stop, you're done). Then, if possible, set v(t_2) = 0, etc. At some point this must fail, i.e. if v(t_i) = 0 for all 1 <= i <= k-1, we must have v(t_k) = 1. Then...
 
 
 
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • Poll
    Brexit voters: Do you stand by your vote?
    Useful resources

    Make your revision easier

    Maths

    Maths Forum posting guidelines

    Not sure where to post? Read the updated guidelines here

    Equations

    How to use LaTex

    Writing equations the easy way

    Student revising

    Study habits of A* students

    Top tips from students who have already aced their exams

    Study Planner

    Create your own Study Planner

    Never miss a deadline again

    Polling station sign

    Thinking about a maths degree?

    Chat with other maths applicants

    Can you help? Study help unanswered threads

    Groups associated with this forum:

    View associated groups
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

    Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

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