Archive for the 'Mathematics' Category

Although the aircraft itself does not break the sound barrier, some of the air rushing around the curves of its wings goes supersonic.

Wednesday, August 16th, 2017

The New York Times: Cathleen Morawetz, Mathematician With Real-World Impact, Dies at 94.

“Cathleen S. Morawetz, a mathematician whose theorems often found use in solving real-world engineering problems, died on Tuesday at her home in Manhattan. She was 94.

Her death was reported by New York University, where she had been a professor.

Much of Dr. Morawetz’s research centered on equations that describe the motion of fluids and waves — in water, sound, light and vibrating solids. One of her first notable papers helped explain the flow of air around airplanes flying close to the speed of sound.”

Aaron Numbers

Sunday, August 13th, 2017

“One reason why many mathematicians really like baseball: At the base of it, if you watch it on television, it’s a fairly boring game. It’s slow-moving, and it’s filled with numbers.”

Numberphile: Aaron Numbers. “A story of baseball, number theory, and serendipity. […] Featuring Carl Pomerance from the Department of Mathematics at Dartmouth College.”

Link via MetaFilter.

William Shakespeare didn’t work alone

Thursday, October 27th, 2016

Deutsche Welle: Big data reveals Shakespeare co-authored 17 of his plays. “Shakespeare got help in writing 17 of his world-famous plays – including from his supposed arch rival Christopher Marlowe. The mixed authorship was revealed in a new edition of his works that relied on big data.”

Das Dreikörperproblem

Wednesday, October 5th, 2016

… musste ich in meinem dritten Semester an der Uni für den Schein in theoretischer Physik Mechanik programmieren. Das sah natürlich längst nicht so schick aus wie diese Website, und davon abgesehen hatte ich einen Fehler im Programm, den ich erst nach mehreren Tagen gefunden habe – es war ein Vorzeichenfehler.

PhET Interactive Simulations, University of Colorado: My Solar System. (Flash)

You can simulate the orbits of two, three or four objects and change the mass, initial position and velocity for each one individually. Try to find stable or chaotic orbits!

Animated Math

Monday, September 12th, 2016

MetaFilter: Animated Math.

“Essence of linear algebra – “[Grant Sanderson of 3Blue1Brown (now at Khan Academy) animates] the geometric intuitions underlying linear algebra, making the many matrix and vector operations feel less arbitrary.””

I’m still working my way through these…