1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Syllogism question

  1. Dec 18, 2008 #1
    I was wondering if anyone could show me why a syllogism of the form oai-3 is invalid.

    Thanks :smile:
  2. jcsd
  3. Dec 18, 2008 #2


    User Avatar
    Staff Emeritus
    Science Advisor

    I was hoping someone else would answer this because I have no idea what "oai-3" means!
  4. Dec 18, 2008 #3
    These are the initials of the famous Aristotelean syllogisms:

    A; All S is P

    E : No S is P

    I : Some S is P

    O : Some S is not P

    Now an OAI-3 IS combination out of the 600 something ,not all of course valid

    I think Deadalus1 must not make his question deadalodic and give us the syllogism
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Syllogism question
  1. Valid Syllogism? (Replies: 6)