If the Erdős-Hajnal conjecture is true, then graphs with forbidden induced subgraphs behave very differently from general graphs, according to Maria Chudnovsky of Princeton University. “It tells you ...

The study of such graphs is called graph theory. Engineers need to find planarity in a graph when, for example, they are designing a computer chip without a crossed wire.

Ringel’s question was about the relationship between complete graphs and trees. He said: First imagine a complete graph containing 2n + 1 vertices (that is, an odd number). Then think about every ...

Graph theory: Solution to '3 utilities problem' could lead to better computers. ScienceDaily . Retrieved June 2, 2025 from www.sciencedaily.com / releases / 2020 / 08 / 200817123034.htm ...