The tactically precise operation successfully extracted Mr. Maduro with no loss of American life, a result heralded by President Trump amid larger questions about the legality and rationale for the U.

In three years as the Arizona Cardinals head coach, Jonathan Gannon is just 15-35. Here are the primary reasons to keep or ...

A youth soccer league canceled practice and police increased security at a sports complex after a 12-year-old boy sent a ...

The origins of complex, nucleated cellular life – everything from amoebas to humans – may date back a lot further in Earth's history than we thought. A new study tracing the earliest steps toward ...

A century ago, the strange behavior of atoms and elementary particles led physicists to formulate a new theory of nature. That theory, quantum mechanics, found immediate success, proving its worth ...

Ask the publishers to restore access to 500,000+ books. An icon used to represent a menu that can be toggled by interacting with this icon. A line drawing of the Internet Archive headquarters building ...

Abstract: We present a bottom up review of complex numbers through analytical functions commonly used in digital signal processing. Standard practice uses complex exponential functions for engineering ...

Ovarian cysts can be simple or complex. Complex ovarian cysts are those that contain either blood or a solid substance. They are more likely to require treatment. Simple cysts are relatively common ...

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A complex adaptive system has three characteristics. The first is that the system consists of a number of heterogeneous agents, and each of those agents makes decisions about how to behave. The most ...

Alan Veliz-Cuba has received funding from the Simons Foundation and the American Mathematical Society for some of his research. You can probably think of a time when you’ve used math to solve an ...