Important information regarding the recent AMS power outage.

The transformer that provides electricity to the AMS building in Providence went down on Sunday, April 22. The restoration of our email, website, AMS Bookstore and other systems is almost complete. We are currently running on a generator but overnight a new transformer should be hooked up and (fingers crossed) we should be fine by 8:00 (EDT) Wednesday morning. This issue has affected selected phones, which should be repaired by the end of today. No email was lost, although the accumulated messages are only just now being delivered so you should expect some delay.

Thanks for your patience.

Additional Material for the Book

Book Web Pages | AMS Bookstore

Continuous Symmetry: From Euclid to Klein
William Barker and Roger Howe
Publication Year: 2007
ISBN-10: 0-8218-3900-4
ISBN-13: 978-0-8218-3900-3

This page is maintained by the authors.

Contact information:

  • William Barker
  • Department of Mathematics
  • Bowdoin College
  • Brunswick, ME 04011-8486
  • Roger Howe
  • Department of Mathematics
  • Yale University
  • New Haven, CT 06520-8283

Photograph of William Barker

Photograph of William Barker / © the Pierce Studio, Brunswick, Maine

A List of errata as a PDF file.  Posted May 2, 2010.  [72 KB]

Revised version of Chapter I as a PDF file. Posted May 2, 2010. [904 KB]

Overview of the Continuous Symmetry course at Bowdoin as a PDF file.  Posted July 6, 2009.  [59 KB]

Continuous Symmetry course syllabus as a PDF file.  Posted June 30, 2009. [79 KB]

Instructor supplementary material, including assignments, worksheets, and handouts/transparencies as a ZIP file.  Posted July 24, 2009.  [2.54 MB]

NOTE: For instructors who wish to obtain copies of assignment solutions, exams, and exam solutions or the TeX code for the worksheets, please contact William Barker at, and provide the URL to your department's faculty listing where your name occurs.

American Mathematical Society