My Math Forum Validity of argument . Euler diagrams

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 October 26th, 2007, 04:53 PM #1 Joined: Oct 2007 Posts: 61 Thanks: 0 Validity of argument . Euler diagrams How does one draw a Euler diagram to determine the validity of the following argument? Thanks: Some philosophers are absent minded. Zitta N is a philosopher. _____________________________ Zitta N is absent minded. If someone would draw a pic that would be great.
 October 27th, 2007, 05:05 AM #2 Global Moderator   Joined: Dec 2006 Posts: 10,951 Thanks: 133 Draw two circles which overlap a bit, one to represent philosophers, and the other to represent the absent-minded; the overlap represents that some philosophies are absent-minded. There is a non-overlapped region within each circle, so being inside one circle doesn't imply being within the other. Some form of annotation could be used for clarification.
 October 28th, 2007, 04:30 AM #3 Joined: Oct 2007 Posts: 61 Thanks: 0 thanks Thanks. i thought of that, but somehow it makes little sense. thanks again.

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# use euler circles to check the validity of the argument. examples

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