Christina Majaski writes and edits finance, credit cards, and travel content. She has 14+ years of experience with print and digital publications. Robert Kelly is managing director of XTS Energy LLC, ...

In 1950, John Nash — the mathematician later featured in the book and film “A Beautiful Mind” — wrote a two-page paper that transformed the theory of economics. His crucial, yet utterly simple, idea ...

John F. Nash Jr. is widely known as the subject of the Oscar-winning film “A Beautiful Mind,” but his contributions to the advancement of human knowledge are far greater. Nash paved the way for game ...

Nash equilibrium helps predict other investors' moves; no net gain by altering your long-term strategy. A dominant strategy excels regardless of others' actions, aiding investment decisions. Using ...

“All in.” Your opponent slides a stack of chips across the high-stakes poker table. You glance back at your cards, a pair of sixes. The game is Texas Hold’em. Only two of you remain, and no community ...