In 1986 an anonymous donor gave the Mathematical Association of America funds sufficient to support a prize honoring inspiring and dedicated teachers. The prize is to be named after Merten M. Hasse, who was a former teacher of the donor, and who exemplified these qualities of a fine teacher. The prize is designed to be an encouragement to younger mathematicians to take up the challenge of exposition and communication.

The Merten M. Hasse Prize is for a noteworthy expository paper appearing in an Association publication, at least one of whose authors is a younger mathematician, generally under the age of forty. The prize is to be $1,000, together with a certificate, and is to be awarded at Summer Meetings of the Mathematical Association of America in odd-numbered years. The award is to be made for material published during the four calendar years beginning January 1 five years prior to the time of the award. The prize may be given for a paper which has already been recognized by an Allendoerfer, Ford, or Pólya Award.

## List of Recipients

## 2019

David Treeby

Further Thoughts on a Paradoxical Tower

*The American Mathematical Monthly*, Vol. 125, no. 1, January 2018, pp. 44–60.

## 2017

Lasse Rempe-Gillen and Zhaiming Shen

The Exponential Map Is Chaotic: An Invitation to Transcendental Dynamics

*The American Mathematical Monthly*, Vol. 122, no. 10, December 2015, pp. 919-940

## 2015

Charles Doran and Ursula Whitcher

From Polygons to String Theory

*Mathematics Magazine*, Vol. 85, no. 5, December 2012, pp. 343-360

## 2013

Henryk Gerlach and Heiko von der Mosel

On Sphere-Filling Ropes

*The American Mathematical Monthly*, Vol. 118, no. 10, December 2011, pp. 863-876

## 2011

Alissa S. Crans, Thomas M. Fiore, and Ramon Satyendra

Musical Actions of Dihedral Groups

*The American Mathematical Monthly*, vol. 116, no. 6, June 2009, pp. 479-495.

## 2009

Andrew Bashelor, Amy Ksir, and Will Traves

Enumerative Algebraic Geometry of Conics

*The American Mathematical Monthly*, vol. 115, no. 8, October 2008, pp. 701-728.

## 2007

Franklin Mendivil

Fractals, Graphs, and Fields

*The American Mathematical Monthly*, Vol. 110, (2003), pp. 503-515.

## 2005

Maureen T. Carroll and Steven T. Dougherty

Tic-Tac-Toe on a Finite Plane

*Mathematics Magazine*, Vol. 77, No. 4, (2004), pp.260-274.

## 2003

Manjul Bhargava

The Factorial Function and Generalizations

*The American Mathematical Monthly*, Vol. 107, (2000), pp.783-799.

## 2001

Francis Edward Su,

Rental Harmony: Sperner’s Lemma in Fair Division

*The American Mathematical Monthly*, Vol. 106, (1999), pp. 930-942.

## 1999

Aleksandar Jurisic

The Mercedes Knot Problem

*The American Mathematical Monthly,* Vol. 103, (1996), pp. 756-770.

## 1997

Jonathan King

Three Problems in Search of a Measure

*The American Mathematical Monthly,* Vol. 101, (1994), pp. 609-628.

## 1995

Andrew J. Granville

Zaphod Beeblebrox's Brain and the Fifty-ninth Row of Pascal's Triangle

*The American Mathematical Monthly,* Vol 99, (1992), 318-331.

## 1993

David H. Bailey, Jonathan M. Borwein and Peter B. Borwein

Ramanujan, Modular Equations, and Approximations to Pi, or, How to Compute One Billion Digits of Pi

*The American Mathematical Monthly,* Vol. 96, (1989), pp. 201-219.

## 1991

Barry Cipra

An Introduction to the Ising Model

*The American Mathematical Monthly,* Vol. 94, (1987), pp. 937-959.

## 1989

Irl C. Bivens

What a Tangent Line Is When It Isn't a Limit

*The College Mathematics Journal* Vol. 17, (1986), pp. 133-143.

## 1987

Anthony Barcellos

The Fractal Geometry of Mandelbrot

*The College Mathematics Journal*, Vol. 15, (1984), pp. 98-114.