**
**# "PROVING WITH PICTURES"

**presented by****
**

**Prof. James
Robert Brown (Philosophy, University of Toronto)
**

**Tuesday,
January 16, 2001
**

6:00 - 9:00
p. m.

at

The Fields Institute**
**

"A common opinion among mathematicians is that
pictures are suggestive and often provide inspiration, but they cannot prove
theorems. We will look at a number of examples to see if this common view
holds up. The examples should be interesting, regardless of one's views on
their legitimacy as proofs."

Here are some of the notes:

We all know one cannot trisect an angle using a straight
edge and a compass but...

What's wrong with these visualizations?

Some more...

"Philosophy of Mathematics: An Introduction to the
World of Proofs and Pictures " by James R. Brown was the door prize and was
won by Lisa Andrejeva. This book is avilable at the University of Toronto
bookstores.

The two books by Roger Nelsen, "Proofs Without
Words" and Proofs Without Words II" are available through the
MAA web site.

#### Back to the *SIMMER*
home page for details.

*This page was last updated: January 20, 2001*