Vesselin Drensky (Sofia): I. Anniversary: 150 Years of idempotents. II. Idempotents of 2 × 2 matrix rings over rings of formal power series. - Online, Zoom webinar - - -
Daodao Yang (Graz): Integers representable as differences of linear recurrence sequences and a variant of Pillai's problem with transcendental numbers - Online, Webex webinar - - -
Renji Han (University of Szeged): Cross-diffusion-driven pattern formation and selection in a predator-prey model with fear effect - Zoom Meeting, ID: 868 7283 8317 - - -
Vladimir Božin, Petar Marković: An equivalent condition to Frankl's Conjecture - Online, Zoom webinar - - -