The numerical integration of stiff equations is a challenging problem that needs to be approached by specialized numerical methods. Exponential integrators form a popular class of such methods since ...

Chemicals foul wells used for drinking water and fuel harmful algae that can make people sick, a Times investigation shows. Chemicals foul wells used for drinking water and fuel harmful algae that can ...

This Olympiad-style exponential problem looks simple at first — until you try solving it. Test your skills and see if you can crack it before I walk through the clever solution step-by-step. Surfers ...

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Abstract: In this article, the exponential stability problem for fractional-order complex multi-links networks with aperiodically intermittent control is considered. Using the graph theory and ...

Whenever someone sends me a question about how to fix their Wi-Fi, I wince. It’s not that I dislike helping people with their router problems. In fact, there are few geeky endeavors I find more ...

WASHINGTON — Hundreds of United Airlines flights were disrupted on Wednesday evening as the carrier grappled with a major computer system outage. "The underlying technology issue has been resolved, ...

There may be some value in "sleeping on it"—or, at least, in taking a deep power nap for 20 minutes—when it comes to problem solving, as it may lead you to a "eureka" moment. This is the conclusion of ...

Customers said they couldn’t access their accounts as equities rallied Monday morning on news of an improvement in U.S.-China trade relations. Fidelity’s website was experiencing technical problems, ...