I have received multiple queries from colleagues who have been invited (from a non-academic email address) to speak a strange-sounding conference that is allegedly supported by major mathematical institutions, allegedly hosted at a prestigious university, and allegedly having myself (and two other Fields Medalists) as plenary speakers. The invitees are asked to pay “registration fees” upfront, with the promise of future reimbursement. (There is a bare-bones web site, which seems to be partially copy-pasted from some previous “conferences” in chemistry and physics, but I will not link to it here.)
I have not agreed (or even been asked) to participate in this event, and I can confirm the same for at least one of the other supposed plenary speakers. There is also no confirmation of the support or location claimed.
As such, this does not appear to be a legitimate scientific conference, and I would advise anyone receiving such an email to discard it.
EDIT: in order to have this post be picked up by appropriate search engine queries, the name of the alleged conference is “Infinity ’25: Horizons in Mathematical Thought”.
SECOND EDIT: I am *not* referring to the 2026 International Congress of Mathematicians (ICM), which is also sending out speaker invitations currently, and is of course an extremely legitimate conference.