from the host website:

About

Category theory is a branch of mathematics which seeks to understand abstract mathematical structures and the relationships between them. Originating in investigations of connections between algebra and topology, category theory has broad applications across various branches of pure mathematics, as well as logic, computer science, linguistics and physics.

Categories and Companions Symposium 2021 (CaCS2021) is an event for research students (Honours/Masters/PhD) in category theory and related disciplines from around the world to meet each other and share their work. Everyone is welcome to attend the event. Each day will feature a 50 minute talk by an invited speaker and a series of 20 minute contributed talks by research students, split across two sessions — the first aimed at Australasian and American time zones and the second at Australasian, African and European time zones. Attendees will also have the opportunity to meet and talk to each other in smaller groups at various times throughout the symposium.

Registration is now open (for both research students and the wider community) via the linked Google Form. When registering, all research students (Honours/Masters/PhD) are invited to propose a title and abstract for a 20 minute talk in category theory or category theory adjacent topics. Talks about work in progress, and talks by those who usually have fewer opportunities to present internationally, are very welcome and especially encouraged. Upon submitting the registration form, a link titled Edit your response will be presented; talk proposals may be edited using this link up until the registration deadline for speakers. The registration deadline for speakers is Friday, May 7, 2021 23:59:59 Anywhere on Earth. The registration deadline for non-speaking attendees is Friday, June 4, 2021 23:59:59 Anywhere on Earth.