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Questions
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Gap between first two nonzero Laplacian eigenvalues on closed compact surface?

may 2 at 19:11 Agol 23.9k●1●33●84

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Surface Laplace-Beltrami without coordinates, exterior calculus?

oct 22 at 2:24 Deane Yang 12.6k●1●33●80

 
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Distributions induced by (weighted) random walks on the integer lattice

aug 21 at 0:43 Will Sawin 18.5k●1●24●48

 
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Does the operator $\mathrm{id}-t\Delta$ or its Green’s function have a name?

aug 7 at 21:39 Rafe Mazzeo 1,179●2●3

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Tweetable way to see that Willmore energy is Möbius invariant?

jun 14 at 22:26 Yuri Vyatkin 89●1●5

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Relationship between Green’s function and geodesic distance?

may 7 12 at 10:38 Liviu Nicolaescu 11.3k●1●20●33

 
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Projection onto a quadratic cone?

apr 10 12 at 23:22 MathOverflow♦ 1●2●3

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Area of a Convex Polygon (Described via Half-Planes)

jan 24 12 at 17:36 Joseph O'Rourke 43.2k●1●49●214

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How do you solve linear systems whose solutions decay exponentially?

nov 3 11 at 8:38 Federico Poloni 4,249●1●12●24

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Estimates for the diameter of a (nice) surface?

sep 21 11 at 17:14 Joseph O'Rourke 43.2k●1●49●214

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