The IBS discrete mathematics group welcomes **Sounggun Wee (위성군)**, a new graduate student at the IBS discrete mathematics group since January 2020. He is currently a graduate student at the department of mathematical sciences, KAIST.

## Dabeen Lee received the INFORMS Optimization Society Student Paper Prize on October 20, 2019

On October 20, 2019, Dabeen Lee (이다빈), a research fellow at the IBS discrete mathematics group, received the 2nd place prize in the INFORMS Optimization Society Student Paper Prize. This prize was established in 2006 by the Optimization Society of the Institute for Operations Research and the Management Sciences and is awarded annually at the INFORMS Annual Meeting for the most outstanding paper in optimization. This year, the INFORMS Annual Meeting was held in Seattle, USA.

Dabeen was awarded for the paper co-authored with his Ph.D. advisor Prof. Gérard Cornuéjols, titled “On some polytopes contained in the 0,1 hypercube that have a small Chvátal rank“. This paper was published in Mathematical Programming in November 2018.

## Please share the poster for our postdoctoral research fellowship

## Welcome Pascal Gollin, a new research fellow in the IBS discrete mathematics group

The IBS discrete mathematics group welcomes Dr. Pascal Gollin, a new research fellow at the IBS discrete mathematics group from October 1, 2019.

He received his Ph.D. from Department of Mathematics, Universität Hamburg in Germany in 2019 under the supervision of Prof. Reinhard Diestel. Welcome!

## Hiring: The IBS Discrete Mathematics Group (DIMAG) Postdoctoral Research Fellowship (Due: Dec. 1, 2019)

The IBS Discrete Mathematics Group (DIMAG) in Daejeon, Korea invites applications for several postdoctoral research fellowship positions. The deadline for the application is December 1, 2019 Sunday. For more detail, please visit the hiring page.

## Welcome Casey Tompkins, a new research fellow in the IBS discrete mathematics group

The IBS discrete mathematics group welcomes Dr. **Casey Tompkins**, a new research fellow at the IBS discrete mathematics group from September 1, 2019.

He received his Ph.D. from the Department of Mathematics at the Central European University in Budapest, Hungary in 2015 under the supervision of Prof. Gyula O. H. Katona.

## Welcome Kevin Hendrey, a new research fellow in the IBS discrete mathematics group

The IBS discrete mathematics group welcomes Dr. **Kevin Hendrey**, a new research fellow at the IBS discrete mathematics group from August 16, 2019.

He received his Ph.D. from the School of Mathematics, Monash University in Australia in 2019 under the supervision of Prof. David R. Wood. Welcome!

## Welcome Abhishek Methuku, a new research fellow in the IBS discrete mathematics group

The IBS discrete mathematics group welcomes Dr. **Abhishek Methuku**, a new research fellow at the IBS discrete mathematics group from August 1, 2019.

He received his Ph.D. from the Department of Mathematics at the Central European University in Budapest, Hungary in 2019 under the supervision of Prof. Gyula O. H. Katona and Prof. Ervin Győri. Welcome!

## Welcome Donggyu Kim (김동규), a new graduate student, and William Overman, a visiting undergraduate student in the IBS discrete mathematics group

The IBS discrete mathematics group welcomes two new students.

**Donggyu Kim (김동규)** is a new graduate student from July 2019 and is currently a graduate student at the department of mathematical sciences, KAIST.

**William Overman** is a visiting student from June 2019 to August 2019 and is currently an undergraduate student in California Institute of Technology. His research visit is sponsored by his home university.

## Sang-il Oum delivered the plenary lecture at the 2019 KMS Spring Meeting.

Sang-il Oum delivered the plenary lecture at the 2019 Korean Mathematical Society Spring Meeting (대한수학회 봄 연구발표회) held at the Kangwon National University in Chuncheon on April 19-20, 2019. The title of his talk was “How to decompose a graph into a tree-like structure”.