geometer
geometrician
geometric topologist
algebraic geometer
Gerardus Mercator
Mercator
Gerhard Kremer
geomean
Schubert calculus
geometry teacher
Bernhard Riemann
Riemann
Georg Friedrich Bernhard Riemann
mean proportional
Archimedes
Eratosthenes
Andrei Markov
Andre Markoff
Andrey Markov
Markoff
representation theorist
Markov
tropical geometry
Auguste Rodin
first fundamental form
Rodin
Francois Auguste Rene Rodin
Nikolai Ivanovich Lobachevsky
Nikolai Lobachevsky
geometrography
Lobachevsky
Condorcet
Marquis de Condorcet
Marie Jean Antoine Nicolas Caritat
geometrist
Georges Seurat
Al-Hasan ibn al-Haytham
Bowditch
Georges Pierre Seurat
Alhacen
Tissot's indicatrix
Ibn al-Haytham
Cartesian circle
Veblen
affine geometry
Alhazen
al-Haytham
topologist
Seurat
Oswald Veblen