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Where does the pivot go?

There are 34 possible outcomes for an NBA playoff series. We know BBBAAAA has never occurred. Have the other 33 all occurred?

Last lecture of the semester! A medley of some of the ok'est linear algebra parodies ever written. youtube.com/watch?v=tEYzkw…

Teruaki is alive, and available on this web page! It's a game for playing with mapping class groups. Take the given blue curve to the one shown on the bottom right, by performing the available Dehn twists (click on the curves to twist). aharalab.sakura.ne.jp/teruaki.html h/t Thomas Ng

Inspired by Edwin Abbott’s satirical novel ‘Flatland’, ‘Squaring the Circle’ is the first in Troika’s series of perspective sculpture that is perceived in correlation to the position of the observer [more, 2013: buff.ly/2LG9D5U]

Harmonic oscillation in a levitated water drop

Boom!

Gripping gears: two gears mesh with and rotate around each other, with no axles and no frame. Joint work with @willsegerman and @Sabetta_. Full video at youtu.be/ENFXnNtd3xU

Announcing the 9th annual Tech Topology Conference: people.math.gatech.edu/~etnyre/TechTo…

Neat example of relative velocities and non-inertial reference frames

(GoPro is attached to the hockey stick)

The word stifle is an anagram of itself.

Ghomi and Spruck have posted a solution to the Cartan-Hadamard conjecture: in a space of negative curvature, spheres maximize volume (previously known only up to dimension 4). arxiv.org/abs/1908.09814

So awesome!

Is it helpful to the community or not to refuse to referee for a highly-priced journal?

Wow, are hyperbolic knots really not generic? arxiv.org/pdf/1908.06187…

An academic walks into a bar and Reviewer 3 says this is not the joke he would have told.

Simone Biles, in extreme slow motion.

Physics. Mathematics. Life. Unpredictable motion of a magnetic chaotic pendulum. tinyurl.com/y5x9tjj8