There are 11 mathematicians whose last name begin with PORTN.

Portnoff, Michael Massachusetts Institute of Technology 1978
Portnov, Mikhail Vrije Universiteit Amsterdam 2005
Portnoy, Allison Harvard University 2020
Portnoy, Arturo Rensselaer Polytechnic Institute 1997
Portnoy, Henry University of London 1957
Portnoy, Henry Imperial College London 1957
Portnoy, Neil University of New Hampshire 1998
Portnoy, Stephen Stanford University 1969
Portnoy, William University of Washington 2005
Portnoy, William University of Illinois at Urbana-Champaign 1959
Portnykh, Vladimir Voronezh State University