Drexel dragonThe Math ForumDonate to the Math Forum

The Math Forum Internet Mathematics Library

Unicursal curves and knot diagrams (Geometry and the Imagination)

Library Home || Full Table of Contents || Suggest a Link || Library Help

Visit this site: http://geom.math.uiuc.edu/docs/education/institute91/handouts/node11.html

Author:Conway, Doyle, Gilman, Thurston; The Geometry Center
Description: A unicursal curve in the plane is a curve that you get when you put down your pencil, and draw until you get back to the starting point. As you draw, your pencil mark can intersect itself, but you're not supposed to have any triple intersections. You could say that you pencil is allowed to pass over an point of the plane at most twice. This property of not having any triple intersections is generic: If you scribble the curve with your eyes closed (and somehow magically manage to make the curve finish off exactly where it began), the curve won't have any triple intersections...

Levels: Middle School (6-8), High School (9-12), College
Languages: English
Resource Types: Lesson Plans and Activities
Math Topics: Knot Theory

[Privacy Policy] [Terms of Use]

Home || The Math Library || Quick Reference || Search || Help

© 1994- Drexel University. All rights reserved.
The Math Forum is a research and educational enterprise of the Goodwin College of Professional Studies.The Math Forum is a research and educational enterprise of the Drexel University School of Education.