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Timeline for Equation $x^2=y^p + 1$

Current License: CC BY-SA 3.0

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Nov 14, 2015 at 12:39 comment added Fedor Petrov @WadimZudilin many thanks! Now I see from your notes, that Nagell's result is immediate after using Pell equation.
Nov 14, 2015 at 12:17 comment added Wadim Zudilin Fedor, this divisibility result is in the heart of the resolution of Catalan's problem by Preda Mihăilescu, not just of this particular case. It is in Mordell's book but I also have all the related things recorded in Russian (wain.mi.ras.ru/cp) after our 2001-02 Moscow seminar. The notes ("Elementary introduction") includes Euler's proof, Nagell's results and proofs from both Ko Chao and Chein. It is a fascinating story!
Nov 14, 2015 at 11:46 comment added Fedor Petrov @WadimZudilin Chein's paper cites Nagell's previous result that $p$ divides $y+1$, I can't neither find Nagell's paper online nor prove it myself, would you please explain this?
Nov 14, 2015 at 1:40 comment added Todd Trimble @paulgarrett Perhaps the downvote was reversed; right now none is there.
Nov 14, 2015 at 0:59 comment added paul garrett I don't understand the down-vote to the question, really: if we ignore the specifics, and "make it a better question than it is", it asks about higher-genus curves, Mordell-Weil, ABC-conjecture, and such, I think, ...
Nov 14, 2015 at 0:04 comment added GH from MO I fixed the date of Ko Chao's publication (Sci. Sinica (Notes) 14 (1964), 457-460).
Nov 14, 2015 at 0:03 history edited GH from MO CC BY-SA 3.0
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Nov 13, 2015 at 23:35 history answered Wadim Zudilin CC BY-SA 3.0