Stan Wagon, Prof. of Mathematics and Computer Science, Macalester College, St. Paul, Minnesota
E-mail: where LAST is my last name.


My square-wheel bike, on permanent display at Macalester College. This construction, believe it or not, earned me an entry in Ripley's Believe It or Not ® (see their depiction here); beats standing in a block of ice for three days or growing three-foot long fingernails. This version is our second such vehicle, built in 2004. The first, from 1995, was a little less refined and the ride on the catenary road less smooth. The new version rides very very smoothly.       [This photo may not be copied or used without my permission.]

Our Work at the International Snow Sculpture Championships in Breckenridge, Colorado

Climbing and Ski Trips and Expeditions
Colorado Skiing  Spring skiing in the steep couloirs of Colorado's high peaks.
Utah Canyon Country  Trips to the unique canyons of the Colorado Plateau in Utah and also near Page, Arizona, and Grand Junction, Colorado.
Canada Skiing  Skiing on the glaciers, and at the huts and lodges of the B.C. and Alberta mountains.
LaSal Range Skiing, Moab  Several trips to ski the LaSals above the slickrock of Moab.
Selkirk Lodge  Featuring a beautiful lodge and a fast ascent of Virtue Mountain.
Icefall Lodge  Flowers, birds, and a 10000-foot glaciated summit.
Bryce and Tupper  Climbs on two famous B.C. peaks, a remote one in the Rockies and a famous one near Rogers Pass.
International Basin Climbing  A climb of several peaks in a remote area of the Purcell Range of B.C.
Mt. Logan  A 17-day, 4-person expedition to the largest mountain in the world.  Also: Icefield Discovery camp.
Mt. Forbes  Featuring a frigid stream crossing.
Eagle Peak  Featuring an unplanned bivouac.
Houston Lake, Moby Dick, Proteus  Climbs of the giants in the Melville Group.
Snowpatch Spire  A climb of a difficult Bugaboo, with a near-serious accident.
Rock Climbing in Gore Range  An ascent of one of the most unusual features in the Gore Range (Peak T), and many others.
Rock Climbing  Mostly Yosemite and Tuolomne climbs (Half Dome, El Cap, Royal Arches, Fairview Dome, etc.).

Wildlife Photos  My best images of birds and animals (goats, marmots, ptarmigan, elk, kea, rattlesnake).
Wildflower Photos  My best images of flowers from the mountains of Colorado.
Selkirk Mountains From Space  A poster-sized lithograph of the highest quality that shows the Selkirks of British Columbia and much of the Rockies, designed by me, is now available for viewing and purchase.

A list of peaks I have climbed  I am happy to share info on request.

Report on knee replacement surgery, summer 2014.

The SIAM 100-Digit Challenge  Ten challenge problems by N. Trefethen with solutions by our prize-winning team.
The VisualDSolve project  An e-book by Antonin Slavik, Dan Schwalbe, and Stan Wagon with a comprehensive Mathematica package for visualizing solutions to differential equations.
Miscellaneous mathematical images  Surfaces drawn using a special contour-and-flow method.
A list of my mathematical papers
Books written by Stan Wagon (all available at
INVISIBLE HANDSHAKE sculpture at Macalester College

Problem of the Week  The Macalester Problem of the Week program was started in 1968 by Prof. J. D. E. Konhauser. Currently it is a private project: I send out a problem once in a while to subscribers, and an archive maintains the past problems. You can subscribe at You can see past problems by clicking on the link above.

My favorite math problems and puzzles

Favorite Contemporary Novels and Nonfiction
Athletic Achievements



Created with the Wolfram Language