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WD_030/ 2004
(  Satoshi Kinoshita )
| Series: | Works on paper: Drawings | | Medium: | pencil on paper | | Size (inches): | 11.5 x 8.2 | | Size (mm): | 297 x 210 | | Catalog #: | WD_030 | | Description: | Signed, date and copyright in pencil on the reverse.
The method of Venn diagrams: The nineteenth-century English mathematician John Venn invented a simple, geometric method for checking the validity of syllogisms, known nowadays as the method of Venn diagrams. In Venn's method, the syllogism is represented by means of three overlapping circles, as shown. The idea is that the region inside the circle marked S represents all objects of type S, and analogously for circles marked P and M. The procedure used to verify the syllogism is to see what the two premises say about various regions in the diagram, numbered 1 to 7.
-an excerpt from MATHEMATICS: The Science of Patterns by Keith Devlin
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