On November 23, 2021, Casey Tompkins from the IBS Discrete Mathematics Group gave a talk at the Discrete Math Seminar on the poset Ramsey number for Boolean lattices. The title of his talk was “Ramsey numbers of Boolean lattices“.

## Casey Tompkins gave a talk on the maximum number of edges in 3-uniform hypergraphs without Berge cycles of length 4 at the Discrete Math Seminar

On March 30, 2021, Casey Tompkins from the IBS Discrete Mathematics Group gave a talk at the Discrete Math Seminar on an upper bound for the maximum number of edges in a 3-uniform hypergraph having no Berge cycles of length 4. The title of his talk was “3-uniform hypergraphs avoiding a cycle of length four“.

## Casey Tompkins gave a talk on extremal problems on Boolean and linear lattices with forbidden posets at the Discrete Math Seminar

On November 10, 2020, Casey Tompkins from the IBS Discrete Mathematics Group presented a talk on the extremal problems on Boolean and linear lattices with forbidden posets at the Discrete Math Seminar. The title of his talk was “Extremal forbidden poset problems in Boolean and linear lattices“.

## Casey Tompkins gave a talk on inverse Turán problems at the Discrete Math Seminar

On July 14, 2020, Casey Tompkins from IBS Discrete Mathematics Group gave a talk on inverse Turán problems at the Discrete Math Seminar. The goal is for a fixed graph H and an integer k to find the minimum number of edges of a graph G such that that every subgraph of G with at least k edges has a subgraph isomorphic to H. The title of his talk is “Inverse Turán Problems“.

## Casey Tompkins gave a talk on the saturation problems in the context of Erdős-Szekeres theorems and posets at the Discrete Math Seminar

On April 14, 2020, Casey Tompkins from IBS discrete mathematics group gave a talk on the saturation version of the problems related to the Erdős-Szekeres theorem on convex k-gons, sequences, and posets. The title of his talk is “Saturation problems in the Ramsey theory of graphs, posets and point sets“.

## Casey Tompkins gave a talk on the extremal problems for Berge hypergraphs at the discrete math seminar

On October 1, 2019, Casey Tompkins at IBS discrete mathematics group presented a seminar talk on an extension of Turán’s theorem to hypergraphs. The title of his talk was “Extremal problems for Berge hypergraphs“.

## 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.