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立体運動効果(stereokinetic effect)のデモ。動きによって立体的に見える(静止していても、ある程度見える)。その見え方は反転する。このデモでは、4つの見え方がある。外側から凸凹のタイプ、凹凸のタイプ、凸凸、凹凹である。
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@zetaexplained … just watched episode #16 youtu.be/IHGM7CiLhNE?is=KZKi…
Replying to @CPierre67
CORRECTION: (Damn … for once I did not explicit the different parts of the contour, I missed real axis phase contributions) … here they are, falling neatly in place toward the functional relationships for dirichlet beta and Riemann zeta … (BIG THANKS to @NihzaBG)
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#DoubleIntegrals A generalization with 4 examples.
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Further generalization to higher order Taylor expansions of cosine powers … multiple IBPs but same derivation using Chebyshev and @chris_juravich cheat-sheet … (just more book keeping)
Replying to @Psicoalfanista @fisico_oso
I’ve worked out the two generalizations using the same gamma function trick. I think my approach is simpler and easier than Kimi’s method (posted yesterday). The pdf note is made by K3 based on my handwritten note in one prompt. Sorry @chris_juravich 2 pages.









































