Abstract: LaSalle’s invariance principle is a commonly used extension of Lyapunov’s second method to study asymptotic stability of nonlinear systems. If the system can be written in polynomial form, ...

Re: “Too embarrassing to go downtown,” letter, Sept. 8. When I read letters like this I think about the expression “cutting ...

For centuries, astronomers have puzzled over the origins of one of the universe's oldest and densest stellar systems, known ...

The latest episode of Project Runway Season 21 delivered a stunning twist that left everyone in shock. At the beginning of ...

Hamilton's rule, introduced in the 1960s, says that altruism—helping others at your own expense—can evolve when the benefits ...

In cellular automata, simple rules create elaborate structures. Now researchers can start with the structures and ...

Abstract: The use of machine learning in medical and assistive applications is receiving significant attention thanks to the unique potential it offers to solve complex healthcare problems for which ...