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Post AQvkKiAOZD4rECTJDs by [email protected] |
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More posts by [email protected] |
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Post #AQtemClpu0dNvDn7dA by [email protected] |
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This new claimed proof of the 4-color theorem is short, interesting, but proble… |
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Post #AQtg8KhbC2V6qXvOBk by [email protected] |
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You don't need to know about graph theory for this: you need to know about … |
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Post #AQtgtpb29C7IH0VEK8 by [email protected] |
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I know that if the coefficients πβ of the power series grow at the stated … |
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Post #AQthI8GaNqC37zWgAy by [email protected] |
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I can think of various options:1) I'm confused about something. 2) The powe… |
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Post #AQthZoSAmqgatJNPOq by [email protected] |
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@johncarlosbaez id be curious if the singularity is really regular and if the e… |
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Post #AQtiMtfsAEk3H0BojA by [email protected] |
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@johncarlosbaez If I weren't just about to step on a plane, it would make f… |
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Post #AQtjIUx2F5IPOKgRl2 by [email protected] |
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@johncarlosbaez I think it's a typo in the line under equation (5): the fun… |
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Post #AQtjlcT1NSNh6EWyi8 by [email protected] |
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@johncarlosbaez i think their formulation is just clunky. The function A is obt… |
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Post #AQtjoHH0dDoSElBDOa by [email protected] |
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@johncarlosbaez The argument in the 2F1 in the definition of A(x) is 12x so the… |
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Post #AQtkMHx4cDzsBf4Zcm by [email protected] |
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@johncarlosbaez Also the function itself won't blow up at 1/12, it'll b… |
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Post #AQtlIUmD5iiCl4kMFM by [email protected] |
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@jewlez - equation (1) is famous - it's the hypergeometric dfferential equa… |
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Post #AQtmDO8USBDQfXIS92 by [email protected] |
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@ralf_muschall - oh, okay! Simple enough. Thanks! |
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Post #AQtmJKfsEiZvfdkJGq by [email protected] |
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@nrbeaton - thanks, I guess you're right, it's just the second derivati… |
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Post #AQtmPZDD6AbCUoJNp2 by [email protected] |
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@rogers - oh, duh! That makes sense. Thanks. Now I can move on to more inte… |
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Post #AQtmQaoGdyftjz8MpU by [email protected] |
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@nrbeaton - oh, right! Thanks! |
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Post #AQtmuRHIeB8SrkwfvU by [email protected] |
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@johncarlosbaez fuchsian means that every singularity of the solutions is regul… |
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Post #AQtnL2U4wEAFmubfHc by [email protected] |
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Hurrah! @rogers, @nrbeaton and @ralf_muschall extricated me from my confusion… |
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Post #AQto7sQv60p2nyPtke by [email protected] |
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@jewlez - Thanks - that sounds like stuff I should learn!I'm pretty sure th… |
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Post #AQtsubjoMC6p21kFqC by [email protected] |
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@johncarlosbaez @jewlez As Wikipedia says, βEvery second-order linear ODE wit… |
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Post #AQtzDQWUsQ5xTcsGh6 by [email protected] |
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@johncarlosbaez Also not an expert here, and I'm sure you all will get the … |
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Post #AQu3uKASmV962DHLNI by [email protected] |
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@johncarlosbaez @rogers @nrbeaton @ralf_muschall Acording to DLMF 15.4; (4) doe… |
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Post #AQu8xT7ET9cAQS5PJg by [email protected] |
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@rrogers - I did the calculation and what the authors say here is right:πβ… |
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Post #AQu9CfRKvjPqzajlR2 by [email protected] |
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@ircwaves - That's a great book! I would love it if Jackson and Richmond&#… |
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Post #AQu9aZT0mzKnPwv1nc by [email protected] |
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@johncarlosbaez OOPS!! I will delete the post. |
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Post #AQuVgSZjWTPglyHAQq by [email protected] |
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@johncarlosbaez @rogers @nrbeaton @ralf_muschall Phew! And I was already wonder… |
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Post #AQuVmB5tQlTkIE2qhs by [email protected] |
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@BartoszMilewski - you're safe for now. π |
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Post #AQvZxWa6TYpd5vnkq8 by [email protected] |
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@johncarlosbaez @highergeometer I've been reading the paper, and a basic el… |
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Post #AQvkKfSMdwfUp3r7JY by [email protected] |
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@noamzoam @johncarlosbaez @highergeometer I don't understand; isn't *ev… |
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Post #AQvkKiAOZD4rECTJDs by [email protected] |
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@plain_simon @johncarlosbaez @highergeometer no, formally the 4CT says somethin… |
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Post #AQvkKkzA5QsFyEEsd6 by [email protected] |
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@noamzoam @johncarlosbaez @highergeometer oh right, thanks! |
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Post #AQvkKnnZcyO4h9qAU4 by [email protected] |
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@noamzoam @johncarlosbaez @highergeometer Then the problem could be that the se… |
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Post #AQvkKqdl3vJnVaGs6K by [email protected] |
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@plain_simon @johncarlosbaez @highergeometer yes, I think that's right. I … |
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Post #AQvkKtSAbSpcEVs9xI by [email protected] |
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@noamzoam @plain_simon @highergeometer - I'm also having trouble understand… |
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Post #AQvlDvYAVcyqfAv80e by [email protected] |
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@johncarlosbaez @plain_simon @highergeometer that's my guess as well. Actua… |
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Post #AQwCCAsBGYEgMwfZxI by [email protected] |
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@johncarlosbaez @plain_simon @highergeometer (I wonder whether it is a confusio… |
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Post #AQwDYPed5boMXPV0T2 by [email protected] |
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@noamzoam @plain_simon @highergeometer " I don't see why Q would be co… |
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Post #AQwEAi60yKJ2joZOkK by [email protected] |
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@noamzoam @plain_simon @highergeometer - In 4.1 they say that Q is the set of … |
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Post #AQwEgG9AQD35K15XDk by [email protected] |
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@noamzoam @plain_simon @highergeometer - the problem starts near the end of 4.1… |
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Post #AQwF9GpAyuzZoyZTKC by [email protected] |
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@noamzoam @plain_simon @highergeometer - They conclude by saying that (π΄(οΏ½… |
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Post #AQwGCUKVKFKcWvK4xs by [email protected] |
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@johncarlosbaez @plain_simon @highergeometer agreed that the proof looks wrong … |
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Post #AQwJsXy4UN7zq3Zp7g by [email protected] |
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@noamzoam @plain_simon @highergeometer - right, Noam. I found a technical gap … |
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Post #AQwKGQPYEiV1LrofQm by [email protected] |
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@noamzoam @johncarlosbaez @highergeometer More generally, given that Tutte allo… |
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Post #AQwKGT8e61l7oIvhzs by [email protected] |
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@plain_simon @noamzoam @highergeometer - right, Simon, that's another big p… |
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Post #AQwKsbLU1yfwGh7LDE by [email protected] |
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@johncarlosbaez @highergeometer I think this contradicts the claim in arXiv:221… |
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Post #AQwKseC1RbtF6DiKNk by [email protected] |
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@noamzoam - by the way, I'm only now seeing a bunch of posts on your thread… |
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Post #AQwPdTiebQ3Q2iYzVQ by [email protected] |
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By now it's clear this paper is wrong in several ways, and cannot be salvag… |
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Post #AQwQLjtrntSay6ugwi by [email protected] |
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@johncarlosbaez @noamzoam @plain_simon Peer review by social media can be prett… |
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Post #AQwQmRTYPgNXe3L3qK by [email protected] |
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@johncarlosbaez @noamzoam @plain_simon let me see if i understand their strateg… |
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Post #AQwQufWM4reVWQZV0y by [email protected] |
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@julesh @noamzoam @plain_simon - I think we were all quite polite. But indeed… |
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Post #AQwRAM7VyavDz9Qtsm by [email protected] |
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@barrygoldman1 @noamzoam @plain_simon - I think that's a good outline of th… |
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Post #AQwSC93LdAa3zWtuym by [email protected] |
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@johncarlosbaez @noamzoam @plain_simon i'm trying to follow this 'loop&… |
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Post #AQwTIZOygAP9P1e5dA by [email protected] |
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@johncarlosbaez @noamzoam @plain_simon my knowledge of 4color theorem entirely … |
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Post #AQwUbhfCHq7ITvv4Fc by [email protected] |
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@johncarlosbaez boo. |
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Post #AQwX8qV8eIBtM996jw by [email protected] |
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@johncarlosbaez @julesh @noamzoam @plain_simon Putting something up on arXiv is… |
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Post #AQwZdHMLYTSJFdfmsa by [email protected] |
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@johncarlosbaez To help me keep track of what's going on in this argument a… |
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Post #AQwbws1xdW9iOZbieO by [email protected] |
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@johncarlosbaez @noamzoam @plain_simon @highergeometer I think these might be d… |
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Post #AQwbxZS0CZXJ3n7ci8 by [email protected] |
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@csk - whether you should show your paper to friends and experts before putting… |
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Post #AQwcI6bwccsphGZ2Rc by [email protected] |
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@barrygoldman1 - yeah, I had to draw it myself. A graph with loops can be dual… |
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Post #AQwcXMgb8ahbte172G by [email protected] |
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@johncarlosbaez you'll have to draw that for me, i don't 'see' … |
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Post #AQwczbPny6gPgccvSa by [email protected] |
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@VinceVatter @noamzoam @plain_simon @highergeometer - there are issues of defin… |
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Post #AQwdOlVPac5oDlFQmW by [email protected] |
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@barrygoldman1 - just draw a graph on the plane with one vertex and one loop. … |
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Post #AQwdnyzEbXehGsDolU by [email protected] |
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@johncarlosbaez @noamzoam @plain_simon @highergeometer Sometimes people just ig… |
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Post #AQwe9XkaY5MVAceV3g by [email protected] |
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@johncarlosbaez ah! a vertex inside the loop, one outside. only one edge conn… |
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Post #AQwfSLOUoUXoIuqbBY by [email protected] |
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@barrygoldman1 - no, it does not seem to notice the existence of graphs with se… |
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Post #AQwfxl8Z9RGl7cNNo0 by [email protected] |
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@VinceVatter @noamzoam @plain_simon @highergeometer - no amount of generosity c… |
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Post #AR2tAsd54UCOTXzmue by [email protected] |
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@johncarlosbaez I will be taking a read through the proof. In his last decade,… |
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Post #AR2uDoQXFgLIGV5cJ6 by [email protected] |
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@ircwaves - Jackson and Richmond's proof turns out to be flawed in several … |
