Question 1

Which countries lead Discrete Mathematics and Combinatorics research?

Accepted Answer

On research quality in 2022-now, the United States, China and the United Kingdom rank highest in Discrete Mathematics and Combinatorics. By volume, China and the United States publish the most (1.8k and 1.6k works in 2022-now).

Question 2

Which institutions lead Discrete Mathematics and Combinatorics research?

Accepted Answer

Centre National de la Recherche Scientifique (France) ranks first in Discrete Mathematics and Combinatorics on research quality in 2022-now, followed by Hungarian Academy of Sciences and Russian Academy of Sciences.

Question 3

Who are the leading researchers in Discrete Mathematics and Combinatorics?

Accepted Answer

Counting only their work in Discrete Mathematics and Combinatorics, Terence Tao, Noga Alon and Benny Sudakov have the most papers in the world top 10% for their subfield and year beyond the 10% expected.

Question 4

Where is Discrete Mathematics and Combinatorics research done?

Accepted Answer

The largest centres of Discrete Mathematics and Combinatorics research in 2022-now are Moscow (Russia), Beijing (China), Paris (France) and Shanghai (China). Among places with at least 20 works in it, it is an unusually large share of all research in Homyel, Koper and Dolgoprudnyy.

Question 5

Where is the best place to study Discrete Mathematics and Combinatorics?

Accepted Answer

Among universities, judged by research, ETH Zurich, Massachusetts Institute of Technology and Stanford University score highest, combining standing in the field's ranking, citation excellence, specialisation, size, growth and international reach. Research strength is one signal when choosing where to study; it does not measure teaching.

Question 6

Is Discrete Mathematics and Combinatorics research growing?

Accepted Answer

Output in 2022-2025 was 18% higher than in 2018-2021, peaking in 2023. The fastest-growing topics are Limits and Structures in Graph Theory, Advanced Combinatorial Mathematics and Finite Group Theory Research.

Question 7

What are the most cited papers in Discrete Mathematics and Combinatorics?

Accepted Answer

The most cited paper in Discrete Mathematics and Combinatorics is "Spectral Graph Theory" (Fan Chung, 1996), with 5,771 citations. Next come "Communication and concurrency" (3,977) and "Partial differential equations of parabolic type" (3,305).