### Math activities for students, teachers, families–just about everyone!

AIM’s Math Communities website has a new calendar of upcoming math activities you can take part in.

### Coronavirus update

#### Friday, April 3, 2020

The workshops through the first week of June have been rescheduled, postponed, or canceled. See the Workshop Changes below for the new dates. All registered participants should have received more information via email.

All SQuaREs scheduled for March, April, and May have been postponed. All participants have been sent further information via email about rescheduling.

AIM staff is closely monitoring the rapidly evolving situation. We will update this page as needed to respond to changes. Additional information is available from the Centers for Disease Control and Santa Clara County Public Health.

### Workshop Changes

- Mathematics of topological insulators

March 16-20, 2020, Columbia University

**Postponed.** - Arithmetic reflection groups and crystallographic packings

March 16-20, 2020

**Rescheduled for December 14-18, 2020.** - Special holonomy and branes

March 30-April 3, 2020

**Rescheduled for October 26-30, 2020.** - Resurgence in string and gauge theory

May 4-8, 2020

**Canceled.** - Equivariant techniques in stable homotopy theory

May 11-15, 2020

**Rescheduled for April 26-30, 2021.** - Random walks beyond hyperbolic groups

June 1-5, 2020

**Rescheduled for May 3-7, 2021.**

### Upcoming Workshops

- Delta symbols and the subconvexity problem

June 15-19, 2020 - Moduli spaces for algebraic dynamical systems

July 13-17, 2020 - Algorithmic randomness

August 10-14, 2020 - The Albertson conjecture and related problems

August 31-September 4, 2020 - Ehrhart polynomials: inequalities and extremal constructions

September 14-18, 2020 - All Upcoming Workshops

## Math that feels good

### Creating learning resources for blind students

Martha Siegel, Professor Emerita from Towson University in Maryland, was working with a blind student who needed a statistics textbook for a required course. The Braille version of the textbook required six months to prepare, a delay which caused the student a significant delay in her studies. Siegel reached out to Al Maneki, a retired NSA mathematician who is blind, and the two of them decided to do something about it.

Focusing on math textbooks initially, Siegel and Maneki pulled together a collaborative team intent on solving the problem. “We were shocked to realize there did not already exist an automated method for producing mathematics Braille textbooks,” said Alexei Kolesnikov, a colleague of Siegel at Towson University and member of the team. Read more…

### Presentation of the 2019 Alexanderson Award

The American Institute of Mathematics has awarded the second annual Alexanderson Award. This award is given in honor of Gerald Alexanderson, Professor of Mathematics at Santa Clara University and founding chair of AIM’s Board of Trustees. The Alexanderson Award recognizes outstanding research articles arising from AIM research activities that have been published within the past three years.

Receiving this year’s award are Paul Bruillard, Siu-Hung Ng, Eric C. Rowell, and Zhenghan Wang for their paper “Rank-finiteness for modular categories” published in the Journal of the American Mathematics Society in 2016. The award was presented at the Alexanderson Award Ceremony and Lecture on the evening of October 4, 2019, in the Recital Hall of Santa Clara University. The lecture was given by Jordan Ellenberg, engaging author of the book *How Not to Be Wrong*.

Video of the award ceremony and lecture

### Exploring the Mathematical Universe

A team of more than 80 mathematicians from 12 countries is charting the terrain of rich, new mathematical worlds, and sharing their discoveries on the Web. The “L-functions and Modular Forms Database (www.LMFDB.org)” started more than 5 years ago with funding to AIM from the National Science Foundation. The project has just announced its official release, providing a new and powerful tool for students and researchers in several areas of mathematics. Read more…

### NET Maps

It is human nature to try to classify things–that is, to sort them into organized types. Many of the central problems in mathematics are problems of classification of various types of related mathematical objects. The classification of finite groups, for example, was a landmark accomplishment of the last century, and the classification of manifolds continues to challenge topologists.

The AIM SQuaRE “The global dynamics of Thurston’s pullback map” with participants, William Floyd, Gregory Kelsey, Sarah Koch, Russell Lodge, Walter Parry, and Kevin Pilgrim, sought to classify the particular **dynamical systems** known as **nearly Euclidean maps**. The late mathematician William Thurston studied—among many other things—dynamical systems resulting from repeated iteration of a mapping from the two-dimensional sphere to itself. Applying a mapping over and over again, and watching what happens to a point, can produce fantastic and beautiful patterns that are intriguing to mathematicians. He focused on some particularly nice ones, the **Euclidean Thurston maps**, which are fully understood and classified using the tools and concepts of linear algebra. But much less well-understood is the much larger family of **nearly Euclidean Thurston (NET) maps**—the very simplest generalizations of the Euclidean ones. These are the dynamical systems studied by this SQuaRE.

It turned out that the tools they used borrowed from an amazing range of areas of mathematics. Moreover, it also turned out that the classification of NET maps could be made practical in the sense that computer algorithms could be developed and used to systematically list and study examples. The elaborate web site produced by the participants shows the effectiveness of the algorithms that they developed for answering many basic questions. Read more…

### Math Teachers’ Circle Network Named as Partner in 100Kin10

NEW YORK, Feb. 17, 2016 — 100Kin10, a national network coordinating and accelerating efforts to bring 100,000 new excellent science, technology, engineering, and math (STEM) teachers into schools by 2021, announced today that the Math Teachers’ Circle Network has been accepted as a partner. The Math Teachers’ Circle (MTC) Network is one of 49 new partners to join a network of now over 280 of the country’s top businesses, nonprofits, foundations and academic institutions to help achieve the goal of 100,000 excellent STEM teachers.

Established at AIM in 2006, Math Teachers’ Circles bring teachers together with mathematicians in a professional environment for mathematical problem solving. The goals are to engage teachers in thinking deeply about mathematics and to build a community of mathematics professionals dedicated to improving education for all students. The MTC Network helps start new MTCs across the U.S. and provides organizational resources to support their activities. As part of 100Kin10, the Math Teachers’ Circle Network has committed to reach 6,000 teachers and their 600,000 students by growing its national network from 80 to 300 Math Teachers’ Circles by 2020. Read more…

### Math in the Quest for Sustainable Agriculture

Just sixty miles from AIM is the Pajaro Valley, one of the richest agricultural regions of the world, an ideal location for fresh berries, vegetables, and flowers. But the valley’s water source is a confined aquifer that is slowly being depleted. With California now in the third year of a serious drought, the problem is even more acute. There is hope, however, that the overdraft can be remedied and the water usage brought back into balance by using a combination of strategies. Mathematically, the problem can be modeled as a large constrained optimization problem, which is exactly what an AIM workshop began working on a little over two years ago.

Read more…