Since the 1970s, algorithms have been able to test graph isomorphism, but in exponential time. This means that the increasing ...

To learn more about the graph isomorphism problem, read Erica Klarreich’s 2015 article “Landmark Algorithm Breaks 30-Year Impasse,” and her January 5 blog post, “Complexity Theory Problem Strikes Back ...

For decades, the graph isomorphism problem has held a special status within complexity theory. While thousands of other computational problems have meekly succumbed to categorization as either ...