# Selected Publications and Presentations

## Publications

*Exceptional Bobo Numbers* (with Alan Mitchell and Samuel C. Zandi), submitted for publication (Draft available upon request). (The exceptional Bobo numbers are A277603
in the OEIS.)

*The Falling Ladder Paradox Revisited* (with Brittany A. Burke and Zach Jackson), The College Mathematics Journal, 49 (2018), pp. 36-40,
https://doi.org/10.1080/07468342.2017.1388690. (Preprint available here.)

*A Closer Look at Bobo's Sequence* (with Daniel T. Clancy), The College Mathematics Journal, 45 (2014), pp. 199-206. (The Bobo sequence is A242679 in the OEIS. Here are the first 845,157 Bobo numbers.)

*Proof Without Words: A Series Involving Harmonic Sums*,
Mathematics Magazine, 80 (2007), p. 83.

*The Harmonic Series Diverges Again and Again* (with Terra A. Stamps), The AMATYC Review, 27 (2006), pp. 31-43. (An unpublished addendum to this article
is available here.)

*Proof Without Words: A Partial Fraction Decomposition*, The College Mathematics Journal, 36 (2005), p. 122.

*The Method of Gnomons and a New Scheme for Approximating Square Roots*, The AMATYC Review, 24 (2003), pp. 57-63.

## Dissertation

*A Divide-and-Conquer Split Schur Algorithm*, Northern Illinois University, August 2015

## Conference Presentations

There's More Than One Way to Integrate that Function (Slides), 44th Annual Conference of the American Mathematical Association of Two-Year Colleges; Orlando, FL; November 15, 2018

The Harmonic Series for Every Occasion (Slides), 43rd Annual Conference of the American Mathematical Association of Two-Year Colleges; San Diego, CA; November 12, 2017

Bobo Numbers, Bobbers, and Bears--Experiences in Undergraduate Research (Handout | Slides), 42nd Annual Conference of the American Mathematical Association of Two-Year Colleges; Denver, CO; November 17, 2016

Bobo Numbers, Bobbers, and Bears--Experiences in Undergraduate Research (Slides), 23rd Annual Conference of the Wisconsin Mathematical Association of Two-Year Colleges; Shebogan, WI; September 24, 2016

Serious About that 1 Series (Handout | Slides), 37th Annual Conference of the American Mathematical Association of Two-Year Colleges; Austin, TX; November 10, 2011

Serious About that 1 Series (Handout | Slides), 36th Annual Conference of the Illinois Mathematics Association of Community Colleges; Monticello, IL; April 1, 2011

Uncommon Approaches to Some Common Calculus Problems (Handout | Slides), 35th Annual Conference of the American Mathematical Association of Two-Year Colleges; Las Vegas, NV; November 12, 2009

Serious About the Harmonic Series II (Handout | Slides), 31st Annual Conference of the Illinois Mathematics Association of Community Colleges; Monticello, IL; March 31, 2006

Serious About the Harmonic Series (Handout | Slides), 31st Annual Conference of the American Mathematical Association of Two-Year Colleges; San Diego, CA; November 10, 2005

Assessing Conceptual Understanding in the Calculus Sequence, Placement and Assessment Themed Sessions, 30th Annual Conference of the American Mathematical Association of Two-Year Colleges; Orlando, FL; November 18, 2004

Tabular Integration by Parts - A Jewel in the Rough, 28th Annual Conference of the American Mathematical Association of Two-Year Colleges; Phoenix, AZ; November 16, 2002

A Superfast Version of the Split Schur Algorithm, 7th Annual Conference of the International Linear Algebra Society; Madison, WS; June 5, 1998

## Unpublished Articles

More Proofs of Divergence of the Harmonic Series

Some Sums via Integration by Parts

A Remarkably Elementary Proof of the Irrationality of *e*

*Last updated June 16, 2019*