### 1976-2016

## 2016-2017

- July 14, Hong Kong IMO, “Pentagonal Tilings”
- July 26, Williams science lunch talk, “Soap Bubbles and Hong Kong”
- Aug 6, MathFest, “Future of Notices AMS”
- Aug 26, Sao Paulo, IME USP Geometry Seminar, “The Log-Convex Density Conjecture”
- Aug 30, Rio: Univ. Fed., “Introduction Isoperimetric Problem with Density”
- Aug 29-Sept 2, Rio: Brazil-Italy Conference, “Isoperimetric Problem with Density”
- Sept 6, Univ. Buenos Aires, Analysis Seminar, “Isoperimetric Problem with Density”
- Sept 8, Univ. Buenos Aires, Colloquium, “Pompas Dobles de Jabón” (Double Soap Bubbles in Spanish)
- Sept 13, Swarthmore College, “The Isoperimetric Problem in Spaces with Density”
- Sept 20-27, Granada
- Sept 29-30, Alicante, “Soap Bubbles and Mathematics”
- Oct 4-7, Lecce
- Nov 1, Ensworth HS, Nashville, “International Mathematics”
- Nov 4, Texas State, “Soap Bubbles and Mathematics” [talk 918]
- Nov 21-25, Luminy, “Isoperimetry with Density” video
- Nov 28-30, IST Austria, “Soap Bubbles”
- Dec 3-4, Union College Math. Conf., “Isoperimetry with Density”
- Jan 4-7, Joint Math Meetings, Atlanta, “The Future of the AMS Notices,” “Least-perimeter Tiles of the Hyperbolic Plane” [talk 923]
- Jan 29-Feb 5, Bridge cruise
- Feb 7-18, U Antonio Nariño, Bogotá, math education seminar on “Learning by Doing,” “Problemas Isoperimétricos con Densidad,” 3-hour course on “Geometric Measure Theory y Problemas Isoperimétricos,” and “Pompas de Jabón y las Matemáticas.”
- Feb 9, U Los Andes, “Soap Bubbles and Mathematics,” 16:00
- Feb 28, U Havana, “Pompas de Jabón y las Matemáticas”
- Feb 28, U Havana, “The Isoperimetric Problem” [talk 934]
- Mar 2, U Havana, “Pompas de Jabón y las Matemáticas” (for high school students)
- Mar 9-16, Kansas City bridge nationals
- Mar 22, Sacred Heart College, “Soap Bubbles and Mathematics”
- Mar 24, Providence College, “Soap Bubbles and Mathematics”
- Mar 31, Math and Culture XX, Venice, “If you want to bring math to the world, start with the mathematicians.”
- April 3, Trento, “The Isoperimetric Problem with Density”
- April 6, Padua, “The Isoperimetric Problem with Density” [talk 940]
- April 8-9, Grand National Teams District 4
- April 17-19, Gatlinburg bridge regional
- April 23, Pullman WA, “The Isoperimetric Problem with Density”
- May 10, U Antonio Nariño, Bogotá, “¿Respuestas antes las preguntas?” (“Answers Before Questions?” remote video)
- May 25, Milano Lezioni Leonardesche, “The Isoperimetric Problem”
- June 1-2, Dos días de Análisis Geométrico en IEMath-GR, Granada, Spain, “The Isoperimetric Problem”

## 2017-2018

- June 12—August 12, Williams College SMALL undergraduate research Geometry Group
- July 12 Williams, “The Isoperimetric Problem in Spaces with Density” with the 2017 Geometry Group
- July 14 Texas State honors summer Math Camp
- July 19, Fields Institute, “The Isoperimetric Problem with Density“
- July 20-23, Toronto bridge nationals
- July 27, MathFest, “AMS Notices: Math and Diversity,” 1:15-1:25
- Sept 28, State Dinner talk, Wake Forest
- Oct 1-3, Washington & Lee visiting committee
- Oct 11, Baylor University, “The Isoperimetric Problem with Density” [talk 950]
- Nov 18, EPaDel MAA meeting at Shippensburg U, “The Most Efficient Tile of Space” and “Workshop on the Most Efficient Tiles of Space”
- Jan 10-13 San Diego Joint Math Meetings: Wed 9:35 “What Every Student Should Know About JMM” panel; Wed 2:30-5:30 pm?
*Notices*Board meeting; Fri 9-10:30 “*Notices*Editors-in-Chief” panel; Sat “Mathematics from the SMALL undergraduate research program” morning and afternoon sessions