Georg Friedrich Bernhard Riemann
Riemann
Bernhard Riemann
metageometrician
metageometry
Euclideanism
Nikolai Ivanovich Lobachevsky
Lobachevsky
Nikolai Lobachevsky
affine geometry
geometer
geometrician
Euclidian space
noneuclidean geometry
Riemannian geometry
quasifield
elliptic geometry
differentiable manifold
Nathaniel Bowditch
Bowditch
imaginary geometry
Euclideanness
Oswald Veblen
tropical geometry
Veblen
algebraic geometer
Euclid's postulate
Euclidean axiom
geometrography
Euclid's axiom
Cartesian space
geometrist
geometry teacher
conics
hyperbolic dodecahedron
n space
hypergeometry
root system
inversive geometry
Pythagoras
Mobius
August F. Mobius
absolute geometry
August Ferdinand Mobius
Melvil Dewey
quasimetric
Melville Louis Kossuth Dewey
Dewey
construction
cossist