Category Theory OctoberFest is an informal meeting, covering all areas of category theory and its applications. It is traditionally held in October. Octoberfest 2019 will be hosted at Johns Hopkins University, Baltimore, Maryland, over the last weekend of October.

The Johns Hopkins Junior Number Theory Days are a two-day workshop in Number Theory, where the speakers are either PhD students who are graduating, or post-docs who recently graduated. It aims to bring together strong, promising young researchers in Number Theory and neighboring fields, and to give them an opportunity to showcase their work.

The Fall 2019 Algebra and Number Theory Day will be held on Saturday, November 9, 2019 at The University of Maryland, College Park. The speakers will be Henri Darmon (McGill), Mark Andrea de Cataldo (Stony Brook), Akhil Mathew (Chicago/IAS), Evangelia Gazaki (Virginia), and Hang Xue (Arizona).

The Baltimore-Washington Metro Area Differential Geometry Seminar (MADGuyS for short) is a joint seminar between the math departments of University of Maryland – College Park , Howard University and of Johns Hopkins University. The next meeting will be held at Johns Hopkins University on October 12th, 2019.

Join us October 18-20, for Jami 2019-2020: Riemann-Roch in characteristic one and related topics. Complete information is found on the event webpage.

The application for the Fall 2019 online math courses is open. The deadline to apply for courses is September 13, 2019. Apply here.

Congratulations to Melissa Mai, a math/biophysics double major, who has been awarded one of this year's Hertz graduate fellowships.

The Spring 2019 Algebra and Number Theory Day will be held on Saturday, April 13, 2019 at Johns Hopkins University. The speakers will be David Hansen (Notre Dame), June Huh (IAS/Princeton), Kiran Kedlaya (UCSD/IAS), David Nadler (UC Berkeley), and Bianca Viray (University of Washington).

Bhargav Bhatt (University of Michigan) will give Spring 2019 Kempf Lectures.