James Propp
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Registered User
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Jun 14 |
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Sperner’s lemma and Tucker’s lemma @domotorp: Thanks for pointing out this article! It was very relevant and interesting. |
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Jun 2 |
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Normality of Chaitin’s constant Just what I needed to know! Thanks, Doug. |
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May 28 |
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Normality of Chaitin’s constant @Francois: I made it a community wiki because the request for a "guiding intuition" is a vague one, and when I've posted such questions in the past, people have complained "This should be a community wiki." But if I'm misunderstanding what community wiki status is for, please enlighten me! |
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May 28 |
revised |
Normality of Chaitin’s constant added 135 characters in body |
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May 28 |
revised |
Normality of Chaitin’s constant deleted 9 characters in body |
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May 28 |
asked | Normality of Chaitin’s constant |
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May 24 |
awarded | ● Nice Question |
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May 24 |
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In what rigorous sense are Sperner’s Lemma and the Brouwer Fixed Point Theorem equivalent? added link to online version of article |
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May 23 |
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Sperner’s lemma and Tucker’s lemma @Paul Taylor: See willamette.edu/~knyman/papers/Fan_Sperner.pdf for clear statements of Sperner's lemma and Tucker's lemma. |
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May 22 |
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In what rigorous sense are Sperner’s Lemma and the Brouwer Fixed Point Theorem equivalent? added 106 characters in body |
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May 22 |
asked | Sperner’s lemma and Tucker’s lemma |
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May 22 |
asked | In what rigorous sense are Sperner’s Lemma and the Brouwer Fixed Point Theorem equivalent? |
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May 16 |
awarded | ● Popular Question |
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May 4 |
awarded | ● Popular Question |
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Apr 30 |
answered | How exactly does Schützenberger promotion relate to Striker-Williams promotion? |
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Apr 17 |
awarded | ● Taxonomist |
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Apr 12 |
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Do all subtraction-free identities tropicalize? @quid: I've changed tropical-mathematics to tropical-arithmetic. Thanks for pointing out the existence of the tropical-arithmetic tag. |
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Apr 12 |
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Do all subtraction-free identities tropicalize? edited tags; edited tags |
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Apr 10 |
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Do all subtraction-free identities tropicalize? Colin and Will's answers are both convincing; thanks! One thing more I'd appreciate is a literature reference that I can cite if I publish something that makes use of this transfer principle. Given how straightforward the proof is (at least in hindsight), it's likely that some version of this result appears in some existing book or article. |
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Apr 10 |
revised |
Do all subtraction-free identities tropicalize? added 9 characters in body |
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Apr 10 |
asked | Do all subtraction-free identities tropicalize? |
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Mar 24 |
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Cyclically symmetric functions edited body |
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Mar 24 |
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Cyclically symmetric functions This reference is extremely well-written, and it covers lots if examples, but the cyclic action on the variables doesn't appear to be one of them (though Theorem 1.17 comes close; it's good to know that for the dihedral action, and all other finite Coxeter group actions, things work out about as nicely as one could hope). |
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Mar 24 |
asked | Cyclically symmetric functions |
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Mar 14 |
answered | constant averages along orbits |
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Mar 3 |
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Using a quadratic kernel instead of a linear kernel in the Laplace transform @Liviu: Thanks, but I am confused. What is $s$? Also, does $L_{loc}^1$ mean locally integrable in the sense of being integrable over every finite interval, or is some sort of uniformity required? |
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Mar 2 |
asked | Using a quadratic kernel instead of a linear kernel in the Laplace transform |
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Feb 14 |
awarded | ● Notable Question |
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Feb 8 |
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Galois connections @Jerome: Oh no -- a mistake in the very first paragraph of my article! Ah well; thanks for catching this error. I will fix it once I get LaTeX properly installed on my new Mac and can create pdfs again. |
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Jan 29 |
awarded | ● Yearling |
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Jan 17 |
asked | Bijective proof of Ramanujan’s congruence |
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Jan 17 |
awarded | ● Popular Question |
