- cographic matroid
- мат.кографовый матроид
English-Russian scientific dictionary. 2008.
English-Russian scientific dictionary. 2008.
Fano plane — In finite geometry, the Fano plane (after Gino Fano) is the projective plane with the least number of points and lines: 7 each. GeometryPerhaps the best way to view the plane is via linear algebra. Using the standard construction via homogeneous… … Wikipedia
Clique-sum — A clique sum of two planar graphs and the Wagner graph, forming a K5 free graph. In graph theory, a branch of mathematics, a clique sum is a way of combining two graphs by gluing them together at a clique, analogous to the connected sum operation … Wikipedia