Bootstrap percolation, a model of irreversible activation on graphs, has emerged as a pivotal area within graph theory and statistical mechanics. In this process, nodes (or vertices) on a network are ...

String theory, conceptualized more than 50 years ago as a framework to explain the formation of matter, remains elusive as a “provable” phenomenon. But a team of physicists has now taken a significant ...

In a recent interview on public television (PBS), Ken Cuccinelli, the acting director of the U.S. Citizenship and Immigration Services, said, “We have always expected people to stand on their own two ...