Xarles, Xavier
- Universitat Autònoma de Barcelona. Abelian varieties over local fields.
- http://mat.uab.cat/~xarles/Welcomee.html

Xing Chaoping
- National University of Singapore. Number theory, algebraic geometry, coding theory, cryptography, Monte Carlo methods.
- http://www.math.nus.edu.sg/~xingcp/