

I am a Professor of Mathematics in the Department of Mathematical Sciences at Purdue University Fort Wayne.
I am interested in geometry of all kinds. Currently, I am studying the geometric properties of real objects inside complex objects: vector spaces, matrices, submanifolds, varieties, vector bundles, singularities, boundaries of open sets, pseudoholomorphic curves. I use the tools of topology, for example the Euler number, to describe the largescale structure of the objects, and methods of several complex variables, including power series and partial differential equations, to describe the local geometry. I'm also interested in classical projective geometry, abstract algebra, and physics, and I often use the computer for symbolic manipulation and graphics.
Click here for links to my research articles, preprints, and notes.
Click here for a list of some grants I've received and some talks I've given.
I am not teaching during Summer 2018. Starting Fall 2018 at Purdue University Fort Wayne, I will be teaching two sections of Differential Equations. Office hours (in my office or in the math MALL) will be announced in class.
From Fall 1997 to Spring 2018 at IPFW, I taught Math 151: Algebra and Trigonometry, Math 154: Algebra & Trigonometry II, the Math 165166 sequence: firstyear calculus (formerly Math 163164), Math 175: Introductory Discrete Mathematics, Math 261: Multivariate Calculus, Math 262: Linear Algebra and Differential Equations, Math 263: Multivariate and Vector Calculus, Math 351: Elementary Linear Algebra, Math 363: Differential Equations, Math 453: Algebra I, MA 511: Linear Algebra with Applications, Math 525: Introduction to Complex Analysis, Math 553: Introduction to Abstract Algebra, Math 554: Linear Algebra, Math 560: Fundamental Concepts of Geometry, and Math 571: Elementary Topology. I also directed some independent graduate study courses in Math 598: Topics in Geometry, and Readings in Special Relativity, and the PhysicsBased Calculus workshop was offered for credit as Math 598 through the IPFW Division of Continuing Studies.
You can also find me on ORCID, Google Plus, and Flickr.

Web pages from past events in the IPFW (19632018) or Purdue
Fort Wayne (starting 2018) Department of Mathematical Sciences:
IPFW PI Math Club web archive 19972018 
Under Construction Notice The IPFW/PFW campus has plans for a major web site redesign starting Summer 2018, so some URLs are subject to change.
One part of the redesign will be that URLs (including this page) at the old address users.ipfw.edu can now be found at users.pfw.edu
The URL of my PFW faculty page is currently: https://www.pfw.edu/departments/coas/depts/math/currentstudentsandfaculty/coffman.html  but this may change soon.I have previously had a web address at http://www.ipfw.edu/math/Coffman/ but this was obsolete in 2010 and deleted in 2013.