noun
pure mathematics
Academic term for mathematics studied for its own sake, as opposed to applied mathematics (応用数学).
彼は純正数学の研究に一生を捧げた。
He devoted his life to research in pure mathematics.
Applied mathematics, contrasted with 純正数学 which is theoretical and not necessarily aimed at practical application.
Compound of 純正 (pure, genuine) and 数学 (mathematics). The term is a direct calque from English 'pure mathematics'.