An innovative approach to solving a stubborn, but elementary, question in graph theory — the mathematical ... of a graph — all the ways to generate isomorphic graphs by renaming nodes.

Mathematicians have long sought to develop algorithms that can compare any two graphs. In practice, many algorithms always ...

If the two graphs are really isomorphic, there’s no way Merlin ... “It would show that the landscape of complexity theory is much richer than we thought,” he said. If this is indeed the ...