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| | NZMS Newsletter No. 87 |
 | | Bernhard Hermann Neumann was born in Berlin-Charlottenburg, Germany in 1909, and after showing aptitude for mathematics at an early age he studied at university in Freiburg and Berlin, and gained his first doctorate (in group theory) in 1932, at the age of 22. |
| | His research covered a range of topics in pure mathematics, and he made particular contributions to the theory of division rings, universal algebra, varieties of groups, automorphism groups, wreath products of groups, and group presentations (including what are now known as HNN extensions, named after Graham Higman, Hanna Neumann and Bernhard Neumann). |
| | Although they introduce Ball's idea of screw theory, they thereby ignore more recent development of this theory by Hunt et al which represents this ambient space more naturally as screw space, foliated by the family of pitch quadrics. |
| ifs.massey.ac.nz /mathnews/NZMS87/news87a.shtml (11463 words) |
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