# Joonkyung Lee

### 이준경

I am an Assistant Professor of Mathematics at Hanyang University, Seoul.

Until recently, I was an IMSS Research Fellow in Pure Mathematics at University College London. Before that, I was a Postdoctoral Researcher at Universität Hamburg working with Mathias Schacht and a Postdoctoral Research Associate at University of Oxford working with David Conlon, who also supervised my PhD at the same university.

Some non-Korean speakers might wonder how to pronounce my name properly. The answer is [dʑungjʌŋ] (if this is too hard, then [dʑunkjʌŋ] may be an alternative) in terms of International Phonetic Alphabet, e.g., June + kyoung.

Here are my CV, Google Scholar profile, and papers:

**Majority dynamics on sparse random graphs**, with Debsoumya Chakraborti, Jeong Han Kim, and Tuan Tran, submitted.

**Odd cycles in subgraphs of sparse pseudorandom graphs****, **with Sören Berger and Mathias Schacht, submitted.**On graph norms for complex-valued functions**, with Alexander Sidorenko, to appear in *J. London Math. Soc**.*

**On tripartite common graphs**, with Andrzej Grzesik, Bernard Lidický, and Jan Volec, to appear in *Combin. Probab. Comput*.

**Two remarks on graph norms**, with Frederik Garbe and Jan Hladký, to appear in *Discrete Comput. Geom.*

**More on the extremal number of subdivisions**

**,**with David Conlon and Oliver Janzer,

*Combinatorica*, 41 (2021), 465–494.

**Convex graphon parameters and graph norms**, with Bjarne Schülke, *Israel J. Math.* 242 (2021), 549–563.

**On the extremal number of subdivisions**, with David Conlon, *Int. Math. Res. Not. *2021, 9122–9145.

**Sidorenko's conjecture for blow-ups****, **with David Conlon, *Discrete Anal. *2021, Paper No. 2, 13 pp.

**On some graph densities in locally dense graphs**, *Random Structures Algorithms *58 (2021) 322–344.

**Ramsey games near the critical threshold**, with David Conlon, Shagnik Das, and Tamás Mészáros, *Random Structures Algorithms *57 (2020) 940–957.

**Some advances on Sidorenko’s conjecture**, with David Conlon, Jeong Han Kim, and Choongbum Lee, *J. London Math. Soc.* 98 (2018) 593-608. Here is a companion note.

**Finite reflection groups and graph norms**, with David Conlon, *Adv. Math. *315 (2017) 130-165.

**Two approaches to Sidorenko’s conjecture**, with Jeong Han Kim and Choongbum Lee, *Trans. Amer. Math. Soc*. 368 (2016) 5057-5074.

**Rank-width of random graphs**, with Choongbum Lee and Sang-il Oum, *J. Graph Theory *70 (2012) 339-347.