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Closed-form minimal surface solutions

1+ day, 6+ hour ago — 

...Jean Baptiste Marie Meusnier discovered two of these in 1776, namely... ...helicoild u(x, y) = tan−1(y/x) u(x, y) = cosh−1(a (x² + y²)½) / a Heinrich Scherk...

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Fundamental solution

2+ day, 15+ hour ago — 

...Cook.... ...So if L is a linear differential operator and F is a fundamental...

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No matter how dubious

2+ day, 16+ hour ago — 

...To use Iain McGilchrist’s metaphor from “The Master and His Emissary... ...I was convinced it was a footnote in Boyce and DiPrima, but could...

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Looking at Your Data

3+ day, 6+ hour ago — 

...Cook....

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Superhyperbola

5+ day, 13+ hour ago — 

...First of all, the superellipse had an advocate, Piet Hein.... ...Piet Hein used the prefix super– to refer to increasing the exponent...

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Diagram chasing | visualizing five lemma as a game

6+ day, 11+ hour ago — 

...edge: blue […] The post The glass disk game first appeared on John... ...Cook. The glass disk game is played on a grid....

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Voyager’s slingshot maneuvers

1+ week, 1+ day ago — 

...Note that before encountering Jupiter, Voyager was moving well below... ...When Voyager 2 passed Jupiter, Saturn, and Uranus, each of these...

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Advantages of Reed-Solomon codes over Golay codes

1+ week, 1+ day ago — 

...There’s a reason CDs use Reed-Solomon codes and not Golay codes... ...After leaving Saturn, the software was upgraded to use Reed-Solomon...

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Hand calculating exp(x)

1+ week, 2+ day ago — 

...The previous post mentioned that Martin Gardner announced that Ramanujan...

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Very accurate pi approximation

1+ week, 2+ day ago — 

...Incidentally, Martin Gardner announced on April Fool’s day in 1975... ...Cook....

 


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