noun
combinatorics
A branch of mathematics dealing with combinations, permutations, and counting. The term 組合せ論 is also used synonymously.
See also: 組合せ論
組み合わせ数学は、離散数学の一分野です。
Combinatorics is a branch of discrete mathematics.
この問題は組み合わせ数学の知識が必要だ。
This problem requires knowledge of combinatorics.