Basic Mathematical Demonstrations
- Lecture notes by Roger Seguin.
- http://rmlx.dyndns.org/math/

Slinko, Arkadii
- Senior lecturer at the department of Mathematics University of Auckland in new Zealand. Current research interests include applied algebra and combinatorics, as well as studying the math olympiads as an educational tool.
- http://www.math.auckland.ac.nz/~slinko/

Stein, Elias M.
- Wikipedia biography.
- http://en.wikipedia.org/wiki/Elias_Stein

Sepp, Artur
- Specializing in financial mathematics. Includes curriculum vitae, publications and lectures. From Estonia.
- http://math.ut.ee/~spartak/

Seppala, Mike
- Complex analysist and algebraist.
- http://www.math.fsu.edu/~seppala/

Sanghavi, Mihir
- Describes a young college student's research interests and research group.
- http://www.math.fsu.edu/~msanghav/

Saad, Nasser
- University of Prince Edward Island. Applied mathematics and mathematical physics.
- http://www.math-cs.upei.ca/~nsaad/

Schachermayer, Walter
- Full Professor of Mathematics at Department of Statistics, Group for Actuarial and Financial Mathematics, University of Technology Vienna, Austria.
- http://www.fam.tuwien.ac.at/~wschach/

Smania, Daniel
- Information about work on dynamical systems, including electronic preprints and references to published articles.
- http://www.icmc.sc.usp.br/~smania/

Sudakov, Benny
- Assistant Professor at the Department of Mathematics, Princeton University. Graphs, Algorithms.
- http://www.math.princeton.edu/~bsudakov/