There are 12 mathematicians whose last name begin with HALS.

Halsey, Eric University of Washington 1972
Halsey, James North Carolina State University 1970
Halsey, Kelvin University of Cambridge 2002
Halsey, Mark Dartmouth College 1984
Halsey, Thomas Harvard University 1984
Halskau, Øyvind Norges Handelshøyskole 2000
Halskov, Kim
Halstead, Mark University of California, Berkeley 1996
Halstead, Maurice The Johns Hopkins University 1951
Halsted, George The Johns Hopkins University 1879
Halstenbach, Wilhelm Rheinische Friedrich-Wilhelms-Universität Bonn 1864
Halstenberg, Bernd Technische Universität Darmstadt 1991