English List of unsolved problems in mathematics Cited by user David Eppstein on 09 Jan 2023 Many mathematical problems have been stated but not yet solved. These problems come from many areas of mathematics, such as theoretical physics, computer science, algebra…
English Strong product of graphs Cited by user David Eppstein on 07 Jan 2023 In graph theory, the strong product is a way of combining two graphs to make a larger graph.
English Four color theorem Cited by user David Eppstein on 07 Jan 2023 In mathematics, the four color theorem, or the four color map theorem, states that no more than four colors are required to color the regions of any map so that no two…
English Thickness (graph theory) Cited by user David Eppstein on 07 Jan 2023 In graph theory, the thickness of a graph G is the minimum number of planar graphs into which the edges of G can be partitioned.