Sergey Degayev
Russian double agent and American mathematician (1857-1921) · United States · On the map · Academics · Died at 63
Sergey Petrovich Degayev was a Russian revolutionary terrorist, Okhrana agent, and the murderer of inspector of secret police Georgy Sudeykin.
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After emigrating to the United States, Degayev took the name Alexander Pell and became a prominent American mathematician, the founder of school of Engineering at the University of South Dakota. The Dr. Alexander Pell scholarship is named in his honor.