I have been intrigued by some spots airing recently on local radio stations: “Support for this WBEZ program is provided by Yellow Cab, whose diverse drivers have been serving Chicagoland since 1915.

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 ...

Our sincere thanks and gratitude to Laura S. Washington for her insightful column “Bootstrap theory works” (Op-Ed, Sept. 15). She captured the reason Yellow Cab Co./Chicago created the radio ...

String theory suggests that the most fundamental building blocks of the universe are not particles like electrons or quarks, but tiny, vibrating strings of energy. It is the vibration and arrangement ...