Julie Rehmeyer
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All Stories by Julie Rehmeyer

Math
A frustrating view of complexity
In the 1980s, an inkling emerged among some scientists that very disparate phenomena might on some deep level be related. The weather, protein folding, computers, evolution, the stock market, the immune system … each shows complex behavior arising from fairly simple interactions among its parts. BUTTERFLY EFFECT The Lorenz attractor, an icon of chaos theory. […]

Math
Rating the rankings
The U.S. News & World Report rankings of colleges and universities are largely arbitrary, according to a new mathematical analysis.

Largest known prime number found
Featured Math Trek column: The Great Internet Mersenne Prime Search, a cooperative computing project, helps find a prime that has nearly 13 million digits.

Math
Following the ocean swirls
The mathematics of dynamical systems reveals ocean dynamics, an understanding that could improve the monitoring of ocean processes.

Math
Largest known prime number found
The Great Internet Mersenne Prime Search, a cooperative computing project, helps find a prime that has nearly 13 million digits.

Math
A knot of light
Normal 0 false false false MicrosoftInternetExplorer4 Normal 0 false false false MicrosoftInternetExplorer4 Imagine twisting a beam of light into a knot, as if it were a piece of a string. Now grab another light beam and tie it around the first, forming its own loop. Tie on another and another, until all of space is […]

Math
Founder of the Secret Society of Mathematicians
Henri Cartan, one of the leaders of a revolution in mathematics, dies at 104.

Math
Seeing in four dimensions
Mathematicians create videos that help in visualizing fourdimensional objects.

Math
Do subatomic particles have free will?
Math Trek: If we have free will, so do subatomic particles, mathematicians claim to prove.

Math
A Quasiquasicrystal
Quasicrystals are bizarre, rare, mysterious materials blending mathematical order and irregularity. A new, unexpected material halfway between a regular crystal and a quasicrystal may help reveal their secrets.

Math
A building of bubbles
Math Trek: The National Aquatics Center in Beijing, newly built for the Olympics, is a glowing cube of bubbles. The mathematics behind it are built around Lord Kelvin's tetrakaidecahedra and the physics of foam.