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Alex Kontorovich
professor at . Editor-in-Chief of Experimental Mathematics . Dean of Academic Content at . Advisory Board at
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Kevin Hartnett 15 h
Turbulence defies mathematical description. But a new proof establishes a universal law underlying certain turbulent phenomena. My story for
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Steven Strogatz 14 h
Odgovor korisniku/ci @stevenstrogatz
Some serious creativity and thinking is expected of students. Why not! Come on America, wake up.
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Steven Strogatz 14 h
Odgovor korisniku/ci @stevenstrogatz
Beautiful, different ways to understand why the angles of a triangle add up to 180°
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Steven Strogatz 4. velj
I just learned about this awesome website and resource “Awesome Math Girls”. Awesome Math Girls strives to motivate, inform and provide tools necessary for middle school and high school girls to perform better in Mathematics.
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Juan Meza 31. sij
NSF's Division of Mathematical Sciences in collaboration with the Simons Foundation has just announced a new $20M funding opportunity on the Mathematical and Scientific Foundations of Deep Learning. Learn more about it at
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Alex Kontorovich 1. velj
Odgovor korisniku/ci @miclugo
Um... cause 3, 8, 30? (n-1)!+n! ?
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Alex Kontorovich 1. velj
Little one: Daddy, why was -2 afraid of 3? Me: ...? LO: Cause 3, 8, 13! :)
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Alex Kontorovich 1. velj
Odgovor korisniku/ci @Shredderroy
Not deeper, just different. We need all kinds. Some nuts you put in water and wait days then months then decades and they’re still not open.
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Alex Kontorovich 1. velj
Odgovor korisniku/ci @AlexKontorovich
3/3 the first 100 pliers, then the next 100, and the last 32. You need different kinds of tape (Scotch, then packing, then duct) in each section, but after 100 more technicalities, you’d have your contraption. Press the first plier down, hard as you can, and pop goes the nut.
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Alex Kontorovich 1. velj
Odgovor korisniku/ci @AlexKontorovich
2/ seems impossible. He’d make pliers from scratch, and observe that they amplify force, but only by 1%. So coupling 232 of these will amplify force by (1.01)^232=10.06, plenty. Problem is, they don’t couple well. So he would build a contraption to hold them, in three parts,
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Alex Kontorovich 1. velj
Thought about Grothendieck vs Bourgain some more; my analogy would be more like: Yes, Grothendieck would put the nut in water, wait a few days, and it would open on its own. Bourgain would observe that your fingers alone need to be 10x as forceful to crack the nut, (cont’d)
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Alex Kontorovich 1. velj
Odgovor korisniku/ci @AlexKontorovich
2/ “As a teacher, [Courant] was good when he prepared, which was seldom” “Morrey understood lots of things, but he was hard to understand” “[At Courant] there was hardly any difference between pure and applied. There was just mathematics” “We could take turns playing Gelfand”
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Alex Kontorovich 1. velj
RIP Louis Nirenberg, Prof Emeritus at NYU’s Courant Institute, winner of numerous prizes (Abel, Crafoord, Steele x2, Natl Medal Science, etc) for work in analysis/geometry/PDE Great interview in Notices, so many great quotes, e.g
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MathPrograms.org 1. velj
Program: 2021 Fellows of AMS - American Mathematical Society, Fellows of the AMS - US, world...
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Nalini Joshi 31. sij
A new prize, the Ladyzhenskaya medal in mathematical physics, has been announced by the National Committee of Mathematicians of Russia, St Petersburg State University, and, for the inaugural prize, the Organizing Committee of the ICM. /1
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Alex Kontorovich 1. velj
Odgovor korisniku/ci @mahrudsay
Yes! These should be required reading for students (and teachers, and parents) of mathematics
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Alex Kontorovich 1. velj
Not to mention, one of the best Algebra books ever... (And Realm of Numbers, etc...)
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Gabrielle Birchak 1. velj
Isaac Asimov, the indefatigably curious chemist and science-fiction icon championed rationality for the common good in 20 million published words
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Alex Kontorovich 1. velj
The main point of this part of the discussion was the line (no pun intended): “No human being has *ever* seen actual parallel lines.” All of Euclid’s plane geometry is merely an illusion...
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michael_nielsen 31. sij
Odgovor korisniku/ci @wtgowers @nattyover
Suppose you have fixed power density, and the sun is of (variable) radius r. The energy flux at the surface - the thing frying you - scales as power density * volume / surface. That's proportional to the radius. The Sun is just a really, really big compost heap!
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