As an undergraduate at the University of Massachusetts, Scott Croshier was a student in three courses that I taught.  In an email dated December 2, 2003, in which Scott requested a letter of recommendation, he also commented on our interactions.



From Tue Dec  2 13:01:53 2003
Date: Tue, 2 Dec 2003 12:04:45 -0600
Subject: Recommendation
From: Scott Croshier <>
Message-Id: <>

Dear Dr. Ellis,

I'm not certain how well you remember me, but I took three courses with
you while a math major at UMass (I graduated in '97). . . .


. . .


. . . I do want to take this opportunity to thank you for everything you've

taught me.  While it will take a bit of review for me to dredge up the

particulars of differential equations I learned from you, I have always

remembered the lesson that mathematicians have an obligation to society, not

just to science.  I now live my life as someone more aware of social issues

than I was as a college student, and I thank you for helping to lead me in

this direction.

Scott Croshier