“If you are a mathematician,” one of the world’s leading mathematicians recently wrote, “you may want to make sure you are sitting down before reading further.” And you’ll definitely need to sit down ...

Abstract: The paper considers the Cauchy problem and boundary value problems for multicomponent cross-diffusion systems, since studying the global solvability of the Cauchy problem and boundary value ...

Black holes are regions in space where gravity is so strong that nothing, even light, can escape. Einstein's theory of general relativity breaks down inside black holes, either by the presence of a so ...

Dr Jin Cheng (Jess Hong) pulls a Sir Isaac Newton move in the VR game in "3 Body Problem." Credit: Netflix If you're the type of person who yells "wey-oh!" if someone in a TV show says the name of the ...

You’re falling into a black hole. Somehow, you’ve managed to protect yourself from the spaghettification that’s happening to every object around you as the black hole’s powerful gravity pulls on the ...

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Present address, Department of Mathematics, Yale University, New Haven, Conn. This paper was written under the sponsorship of the Office of Ordnance Research, U.S. Army, under contract ...

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Word problems try and tell students a story about the math problem in front of them. They are a useful way to connect abstract numbers to concrete situations, so students can learn early on to apply ...