Brenton leMesurier

Associate Professor
Department of Mathematics
College of Charleston
Charleston, SC 29424
Phone (843) 953-5917, messages -5730, FAX -1410.

Last revised October 20, 2009.

My email address (obfuscated to avoid automated collection for junk mail purposes) is lemesurierb "at" cofc.edu

Disclaimer Don't trust anything you read on the internet, including this --- Douglas Adams.

Where is Dr. LeMesurier? Office Hours etc.

Here is my calendar for the rest of the Fall semester. It includes my new office hours, updated October 20:

Regular Office Hours: Monday to Thursday 2-3.
Alternative Office Hours (let me know in advance the time you want to come): Monday to Thursday 3-5.

If want to see me any Monday through Thursday but you cannot come between 2 and 3, just let me know that you want to come instead at some time from 3 to 5pm.
4pm or later should always work; from 3-4pm I am free most days, but might have another meeting scheduled.

Which text should I get for Math 120?

There are several choices of textbook for Math 120, so a lot of students have ben asking which version is best for them. I have some suggestions on this at the website for my Math 120 sections.

Courses this semester, Fall 2009

This Fall I am teaching two sections of Math 120, Introductory Calculus, with all classes meeting in Maybank 219.

Section 3, MWF 10-10:50 and Thursday 9:25-10:40
and
Section 6, MWF 12-12:50 and Tuesday 12:15-1:30

My Math 120 website is at http://lemesurierb.people.cofc.edu/math120/

Recent Courses

Here are the web sites for the previous time I taught each course.

Curriculum Vitae

For everything about my recent professional activities (up to February 2008), read my Curriculum Vitae.

Mathematical Interests

My main research area is self-focusing of nonlinear waves, particularly as it occurs in plasma physics laser propagation and vibrations in long biological molecules: proteins and DNA. Much if this work involves numerical methods for approximation solution of these and other nonlinear evolution equations. Recently I have added consideration of random effects to the mathematical models, leading to Stochastic Differential Equations.

Some Recent Talks, Publications, and Preprints

My recent work on wave propagation in biopolymers is described in the PDF presentation for my talk at the Nonlinear Evolution Equations and Dynamic Systems Workshop on the 22nd of June 2007 at L'Ametlla de Mar, Spain. A paper based on this is scheduled to appear in the new Journal of Discrete and Dynamic Systems Series S, volume 1, number 2 pages 317-327 June 2008. It has already appeared online: see DSCS-S website)
Other recent work is described in the PDF slideshow Modeling thermal effects on nonlinear wave motion in biopolymers by a discrete nonlinear Schrödinger equation with damping and stochastic driving for a talk at the SIAM Conference on Nonlinear Waves and Coherent Structures, September 9-12, 2006.
The paper Wave energy self-trapping by self-focusing in large molecular structures: a damped stochastic discrete nonlinear Schrödinger equation model on joint work with CofC undergraduate Barron Whitehead, appeared in Physica D: Nonlinear Phenomena volume 225, 1 January 2007, pages 1-12. It is also published online at DOI online. This link should work from on-campus at the CofC, or anywhere else with a suitable online subscription. Otherwise, a preprint version from January 2006 is available online, but the final version is substantially revised, particularly by the use of improved numerical methods, which are described in the more recent talk above.
The paper Beam stabilization in the 2D nonlinear Schrödinger equation with attractive potential by beam splitting and radiation appeared in Physical Review E volume 70, 046614, 28 October 2004. There is a preprint available.
The paper Regularization and control of self-focusing in the 2D cubic Schrödinger equation by attractive linear potentials appeared in Physica D: Nonlinear Phenomena volume 184, 1 October 2003, pages 226-236. This was a special issue on Complexity and Nonlinearity in Physical Systems to Honor Alan Newell. Yes, there is a preprint available.
There are also rather disorganized collections of older papers and slideshows for talks.