On October 18, 2022, Florent Koechlin from LORIA, INRIA, France gave a talk at the Discrete Math Seminar on the reducibility of uniformly random expressions. The title of his talk was “Uniform random expressions lack expressivity“.

## “2022 Combinatorics Workshop” (2022 조합론 학술대회) was held from September 30 to October 1, 2022 at GIST, Gwangju

The 2022 Combinatorics Workshop (2022 조합론 학술대회) was held from September 30, 2022 to October 1, 2022 at GIST, Gwangju. There were 4 invited talks and 9 contributed talks.

## Invited talks

- Andeas Holmsen, KAIST
- Seog-jin Kim (김석진), Konkuk University
- Seung Jin Lee (이승진), Seoul National University
- Hayan Nam (남하얀), Duksung Women’s University

## Contributed talks

- Zixiang Xu, IBS ECOPRO
- Mark Siggers, KNU
- Alexander Clifton, IBS DIMAG
- Stijn Cambie, IBS ECOPRO
- Jun Gao, IBS ECOPRO
- Minho Cho (조민호), KAIST
- Nika Salia, IBS ECOPRO
- Jaeseong Oh, KIAS
- Jungho Ahn, KAIST / IBS DIMAG

## Organizing Committee

- Jeong Ok Choi (최정옥), GIST
- Minki Kim (김민기), GIST
- Sangwook Kim (김상욱), Chonnam National University
- Hong Liu, IBS Extremal Combinatorics and Probability Group

## Host and Sponsors

- IBS Extremal Combinatorics and Probability Group
- National Research Foundation of Korea

## Nika Salia gave a talk on the maximum number of bicliques in a graph without an even cycle of a fixed length at the Discrete Math Seminar

On October 11, 2022, Nika Salia from the IBS Extremal Combinatorics and Probability Group gave a talk at the Discrete Math Seminar on the maximum number of bicliques in a graph without an even cycle of a fixed length at the Discrete Math Seminar. The title of his talk was “Exact results for generalized extremal problems forbidding an even cycle“.

## Zixiang Xu (徐子翔) gave a talk on Turán numbers of bipartite graphs at the Discrete Math Seminar

On October 4, 2022, Zixiang Xu (徐子翔) from the IBS Extremal Combinatorics and Probability Group gave a talk at the Discrete Math Seminar on the Turán numbers of bipartite graphs and recent approaches. The title of his talk was “On the degenerate Turán problems“.

## Santiago Guzmán-Pro gave an online talk on characterizing hereditary graph classes definable by forbidden orientations at the Virtual Discrete Math Colloquium

On September 29, 2022, Santiago Guzmán-Pro from the Universidad Nacional Autónoma de México (UNAM), Mexico gave an online talk on characterizing hereditary graph classes definable by forbidden orientations at the Virtual Discrete Math Colloquium. The title of his talk was “Local expressions of graphs classes“.