John E. Harper
Assistant Professor

Department of Mathematics
The Ohio State University, Newark
Newark, OH 43055

Office: Reese 254
Phone: 740-755-7854
Office (Columbus): MA 418
Phone (Columbus): 614-292-7670

I am currently (2013--present) an Assistant Professor in the Department of Mathematics at The Ohio State University, Newark.
In 2012--2013 I was a Visiting Assistant Professor in the Department of Mathematics at Purdue University.
VAP sponsor: J.E. McClure.
In 2010--2012 I was a Homotopy Theory Postdoctoral Fellow in the Department of Mathematics at the University of Western Ontario in Canada. Postdoctoral sponsor: J.F. Jardine.
In 2008--2010 I was a Postdoctoral Fellow in the Institut de Géométrie, Algèbre et Topologie at EPFL in Switzerland. Postdoctoral sponsor: K. Hess.
In 2003--2008 I completed my Ph.D. in Mathematics at the University of Notre Dame. Thesis advisor: W.G. Dwyer.

Bio Editorial Students Research Publications Visits Education Mentoring Teaching Talks Conferences Service

Short mathematical biography

My mathematical career began while I was in graduate school at MIT for a period of 6 years (1996--2002). I had entered MIT to study aeronautics and astronautics, and by the time I left I was working full-time on mathematics and was off to begin a PhD thesis in homotopy theory with W.G. Dwyer at the University of Notre Dame (2003--2008). After 5 years at Notre Dame I completed my doctoral thesis in spring 2008 and moved to Switzerland to begin a postdoctoral fellowship at EPFL in Lausanne with K. Hess as postdoc sponsor (2008--2010). Following Switzerland I moved to Canada to begin a postdoctoral fellowship at the University of Western Ontario with J.F. Jardine as postdoc sponsor (2010--2012). Following Canada I moved back to the US as a one-year visiting assistant professor at Purdue University (2012--2013) with J.E. McClure as VAP sponsor, after which I began my current position (2013--present) as assistant professor. I live in Upper Arlington, Ohio, 10 minutes from the Columbus campus (where I work with graduate students) and 35 minutes from the Newark campus (where I work with undergraduate students).

Editor for

This is a relatively new general mathematical journal, founded in 2008 by Tbilisi Centre for Mathematical Sciences (TCMS). It is electronically published online by De Gruyter Open and covers all important areas of mathematics. The journal is fully open-access and free of charge. TCMS also owns another mathematical journal "Journal of Homotopy and Related Structures" printed by Springer.

If you have a high quality mathematics manuscript, and are interested in publishing it in a highly selective and fully open-access general mathematics journal, then I would encourage you to consider submitting your paper to Tbilisi Mathematical Journal. I am able to serve as editor for submissions in any of the following areas, and will strive to ensure a fair and respectful submission process.

Editorial interests: homotopy theory, algebraic topology, structured ring spectra, Goodwillie calculus

Current PhD students

Research interests

The areas I am interested in are homotopy theory and algebraic topology, and their interactions with closely related areas in mathematics---algebraic K-theory, algebraic number theory, algebraic geometry, homological algebra, and geometric topology.

Publications and preprints

Extended research visits


Mentoring: Undergraduate, Graduate, and Postdoctoral

Teaching: Undergraduate and Graduate

Here are Student Testimonials on my teaching and courses.

Selected invited talks

Selected informal talks

Conference participation

Service to the profession

Seminars organized

Honors, prizes, and memberships

Languages (reading)


Useful links