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Ramsay

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Why is a topology made up of ‘open’ sets? [closed]

jan 21 at 20:07 Marcos Cossarini 713●6●8

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Analytic tools in algebraic geometry

apr 20 11 at 21:46 Tom Goodwillie 27k●2●62●111

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What is torsion in differential geometry intuitively?

dec 16 at 6:48 Peter Michor 6,358●1●15●20

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How do I fix someone’s published error?

dec 11 10 at 2:04 Thierry Zell 3,113●1●17●43

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One-step problems in geometry

nov 11 at 14:53 Alexandre Eremenko 10.8k●1●24●40

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Where to publish a math textbook in Creative Commons

may 31 at 21:13 Ronnie Brown 5,486●19●21

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Explicit metrics

jun 6 11 at 19:46 Robert Bryant 22.4k●3●75●98

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Definition of “simplicial complex”

apr 30 at 12:51 Andrew Ranicki 1,741●1●9●8

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Two-convexity ⇒ Lefschetz?

oct 1 at 15:43 Anton Petrunin 16.6k●42●110

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Why is the Laplacian ubiquitous?

aug 19 at 1:20 Marc Chamberland 147●5

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Extending a diffeomorphism of S^2 to D^3

feb 25 at 16:46 Tom Goodwillie 27k●2●62●111

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