Characterization of epimorphisms of nets by normal decompositions
Characterization of Grassmannians by one class of singular subspaces.
Characterization of Low Dimensional RCD*(K, N) Spaces
In this paper,we give the characterization of metric measure spaces that satisfy synthetic lower Riemannian Ricci curvature bounds (so called RCD*(K, N) spaces) with non-empty one dimensional regular sets. In particular, we prove that the class of Ricci limit spaces with Ric ≥ K and Hausdorff dimension N and the class of RCD*(K, N) spaces coincide for N < 2 (They can be either complete intervals or circles). We will also prove a Bishop-Gromov type inequality (that is ,roughly speaking, a converse...
Characterizing the conformality in a Minkowski space
Charakterisierung der affinen Geometrien durch ein kategorientheoretisches Axiomsystem.
Charakterisierung der kompakten, zusammenhängenden Moufang-Hughes-Ebenen anhand ihrer Kollineationen.
Charakterisierung von Kettengeometrien über semilokalen Algebren.
Charakteristiken und Schnittzahlformeln für p-l-s-Kegelschnitte
Chiral Polytopes from Hyperbolic Honeycombs.
Chord-decreasing homeomorphisms in Euclidean spaces
Chords and arclength of a closed space curve
Circle packing in the hyperbolic plane.
Circumcenter, Circumcircle and Centroid of a Triangle
We introduce, using the Mizar system [1], some basic concepts of Euclidean geometry: the half length and the midpoint of a segment, the perpendicular bisector of a segment, the medians (the cevians that join the vertices of a triangle to the midpoints of the opposite sides) of a triangle. We prove the existence and uniqueness of the circumcenter of a triangle (the intersection of the three perpendicular bisectors of the sides of the triangle). The extended law of sines and the formula of the radius...
Classes of Graphs Which Approximate the Complete Euclidean Graph.
Classical -symbols and the tetrahedron.
Classical geometry and computers.
Classical polar spaces (sub-)weakly embedded in projective spaces.
Classification of 4-Dimensional Generalized Symmetric Planes.
Classification of 4-Dimensional Symmetric Planes.
Classification of dodecahedral space forms.