## National Mathematics Colloquium

UNION OF BULGARIAN MATHEMATICIANS INSTITUTE OF MATHEMATICS AND INFORMATICS, BULGARIAN ACADEMY OF SCIENCES NATIONAL MATHEMATICS COLLOQUIUM The next meeting of the National Mathematics Colloquium will be held on October 14, 2020 (Wednesday) at 4:15 p.m. in the Conference Room of the Institute of Mathematics and Informatics, Acad. G. Bonchev Street, Block 8. A talk on: Chain Ring Analogues of Some Theorems from Extremal Set Theory will be delivered by Prof. Ivan Landjev, IMI – BAS. ABSTRACT Everybody is invited. The colloquium will be streamed via Discord at https://discord.gg/Sv9Apjs. You can download Discord from https://discord.com/download. Head of the Colloquium: Acad. P. Popivanov