I shall speak about some recent developments on the subject of modal model theory for the Junior Logic Seminar at the University of Oxford. The talk, titled *The Mathematical Multiverse*, will take place at the Mathematical Institute on November 16, 2021 at 5PM UK time. Please contact Brian Tyrrell should you like to join us.

**Abstract.** Expanding on the subject of modal model theory introduced by Joel David Hamkins and myself, I should like to share some progress on the quest to unearth the modal nature of mathematics.

Learn more about modal model theory on Joel David Hamkins‘s blog.