John R Schmitt, Ph.D.          Professor of Mathematics      Department of Mathematics and Statistics       Middlebury College             Middlebury, VT 05753, USA          Phone:1- 802-443-5952                        E-mail: jschmitt@middlebury.edu            Office: Warner Hall 205          Office Hours: (Fall '25) Monday and Wednesday 9:45am--11:10am, Thursday 1:30--3pm, or by arrangement