#mathematician  a person skilled in mathematics
  supertype:  #scientist__man_of_science  a person with advanced knowledge of one of more sciences
  instance:  #Niels_Henrik_Abel  #Archimedes  #Jacques_Bernoulli  #Johann_Bernoulli  #Friedrich_Wilhelm_Bessel  #George_Boole  #Nathaniel_Bowditch  #Rene_Descartes  #Diophantus  #Eratosthenes  #Leonhard_Euler  #Pierre_de_Fermat  #Baron_Jean_Baptiste_Joseph_Fourier  #Evariste_Galois  #Karl_Friedrich_Gauss  #Sir_William_Rowan_Hamilton  #Hero_of_Alexandria  #David_Hilbert  #Hipparchus  #Karl_Gustav_Jacob_Jacobi  #Felix_Klein  #Leopold_Kronecker  #Pierre_Simon_de_Laplace  #Gottfried_Wilhelm_Leibniz  #Nikolai_Ivanovich_Lobachevsky  #Benoit_Mandelbrot  #Andrei_Markov  #Hermann_Minkowski  #August_Ferdinand_Mobius  #Johann_Muller  #John_Napier  #Sir_Isaac_Newton  #Emmy_Noether  #Omar_Khayyam  #Blaise_Pascal  #Benjamin_Peirce  #Pythagoras  #Georg_Friedrich_Bernhard_Riemann  #Alan_Mathison_Turing  #Oswald_Veblen  #Paul_Vernier  #John_von_Neumann  #Andre_Weil  #Alfred_North_Whitehead  #Norbert_Wiener
  subtype:  #algebraist  a mathematician whose specialty is algebra
  subtype:  #arithmetician  someone who specializes in arithmetic
  subtype:  #geometer__geometrician  a mathematician specializing in geometry
     instance:  #Euclid
  subtype:  #number_theorist  a mathematician specializing in number theory
  subtype:  #probability_theorist__probabilitytheorist  a mathematician who specializes in probability theory
  subtype:  #mathematical_statistician__statistician  a mathematician who specializes in statistics
  subtype:  #trigonometrician  a mathematician specializing in trigonometry

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