National Mathematics Day: 5 maths formulas you’ll actually use after school

India celebrates National Mathematics Day on December 22 to commemorate the birth anniversary of the Indian mathematician Srinivasa Ramanujan. He shaped twentieth-century mathematics with his ...
IEEE

A Polynomial-Based Approach of Reachable Set Estimation for Periodic Time-Varying Systems

Abstract: This article is focused on estimating reachable sets for periodic time-varying systems, whose dynamics are represented by trigonometric series through Fourier theory. Given the difficulty of ...
The Straits Times

Lando Norris, the Formula One world champion, is a class act

What do Frank Sinatra and Lando Norris have in common? Well, one sang about how he did things his way and the other would probably have done likewise as he achieved a childhood dream. But the tears ...
IEEE

A Class of Quadratic Polynomial Chaotic Maps and its Application in Cryptography

Abstract: At present, the probability density of most chaotic systems is unknown, and the statistical characteristics of chaotic sequences cannot be described by the probability density of chaotic ...
Billboard

Billie Eilish Hits the Rock & Alternative Year-End Charts Hard (And Soft): Countdown to Billboard’s 2025 Year-End Charts

Ahead of the full reveal on Dec. 9 -- after The Billboard 2025 No. 1s Livestream, hosted by Druski -- check out a pair of year-end rock top 10s. By Keith Caulfield The full list of Billboard’s 2025 ...