Similar to ポントリャーギン類

Sum-free set

Sumset

SymPy

Séminaire de Géométrie Algébrique du Bois Marie

S (programming language)

Sigma-ring

T1 space

The Mathematical Gazette

The Quarterly Journal of Pure and Applied Mathematics

Theorema Egregium

Tor functor

Thousands of Problems for Theorem Provers

True quantified Boolean formula

Tau (mathematics)

Student's t-test

Student's t-distribution

Undergraduate Texts in Mathematics

UP (complexity)

Vectorization (mathematics)

Vieta jumping

WIRIS

Wolfram Demonstrations Project

Xorshift

X-ray transform

Yacas