click here for the plus home page
© 1997-2009, Millennium Mathematics Project, University of Cambridge.
Permission is granted to print and copy this page on paper for non-commercial use. For other uses, including electronic redistribution, please contact us.
Seven things everyone wants to know about the universe
icon

What would you like to know about your universe?

Careers with maths
icon

Andy Green is gearing up to break the land speed record in his rocket powered car Bloodhound SSC

A favourite from the archive...
Subscribe to our RSS feed:
AddThis Feed Button subscribe to our RSS feed
 
September 2009
Tags

law of excluded middle

Feature icon

If you like mathematics because things are either true or false, then you'll be worried to hear that in some quarters this basic concept is hotly disputed. In this article Phil Wilson looks at constructivist mathematics, which holds that some things are neither true, nor false, nor anything in between.

Tags: philosophy of mathematics : logic : constructivist mathematics : intuitionist mathematics : law of excluded middle : binary logic