I have added this section to my post a few weeks ago about using the SVD to measure partisanship in the United States Senate.... 更多内容 >>

Many observers have noted that the United States Senate has become increasingly partisan in recent years. Votes are being made more frequently along strict political party lines. The singular value decomposition, the SVD, of matrices derived from records of roll call votes in the senate can measure this partisanship.... 更多内容 >>

I've blogged about this gem from Lothar Collatz (1910-1990) before, but it deserves to be repeated. Especially since it now provides an elegant example of singleton expansion.... 更多内容 >>

Alexa tells me that the definition of serendipity is "the occurrence and development of events by chance in a happy or beneficial way."... 更多内容 >>

A Mesmerizing AnimationWe are working on a paper about the Kuramoto model of self-synchronizing oscillators. This animation shows the different initial conditions where six oscillators fail to... 更多内容 >>

"A History of MATLAB", a 67-page paper that Jack Little and I have written, has been published by the ACM, the Association for Computing Machinery, in the Proceedings of the ACM on Programming Languages, volume 4, June 2020.... 更多内容 >>

It has been a while since I made a blog post. It is because I am preparing to give a talk next week on"The Evolution of the Evolution of MATLAB"on E-NLA, the Online seminar series on Numerical... 更多内容 >>

(A slight revision of the post I made a few hours ago.)... 更多内容 >>

John Horton ConwayFrom the New York Times, April 15, 2020John Horton Conway, a ‘Magical Genius’ in Math, Dies at... 更多内容 >>

Lots of tiny bubbles.... 更多内容 >>