Content Teasers for November 2002
You Can't Go Wrong with Triangles
The multiple-choice test dreams are made of.
Is the SAT I Exam Irrelevant?
Was all your late night cramming for nought?
Tiling with Pi
Canadian-born artist Arlene Stamp is inspired by fractals, and base 2, and pi.
The Devil is in the Culture
Why you should read "The Number Devil" and other musings on mathematical education and culture.
A different perspective from reader Angie
Thuy-Anh Mai (added June 2005).
Alfred Bray Kempe's "Proof" of the Four-Color Theorem
An oversight by Kempe sparked a century-long search for the correct proof.
Lewis Carroll's Day-of-the-Week Algorithm
What day of the week was January 27, 1832, Carroll's birth? Quick!
Mind your abscissas and your ordinates.
Proposed by P. Wagner, Chicago, Illinois. ABCD is a quadrilateral with AD=BC and AB parallel to DC.
E is any point on AB and F is any point on CD. Prove that the points of intersection of
AF with DE, EC with FB and AC with DB are colinear.
Proposed by E. M. Kaye, Vancouver, B.C. Let x and y be any real numbers. Determine the
maximum value of a^2 x^6 y^4 - x^8 y^4 - x^6 y^6.
The Final Exam: You know you're a mathematician if...