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Apr 16, 2020 at 18:10 comment added user142929 Many thanks for your attention, the comment is just for those solutions that I've showed, I don't know if it is easy to prove that the solutions $(x,y)$ have this property $x=y$. Many thanks again for your great answer in this post.
Apr 16, 2020 at 17:35 comment added Bjørn Kjos-Hanssen @user142929 that's true whenever $x=y$, right?
Apr 16, 2020 at 14:06 comment added user142929 I was interested today in other type of equations that evoke variants of other equations that are in the literature. My new problem (I don't know if this is in the literature and I add it as a curiosity if you want to study it in your home) is to determine if the equation $$x^{\sqrt{xy}}=y^{\frac{2}{\frac{1}{x}+\frac{1}{y}}},$$ that involves the geometric and the harmonic means in the exponents, has finitely many solutions for integers $x,y\geq 1$. I can to find the first of those as $x=y=1,60,196,509,\ldots$ I hope don't disturb with this comment, I add this message just as curiosity.
Sep 24, 2019 at 13:12 history bounty ended user142929
Sep 24, 2019 at 13:12 vote accept user142929
Sep 20, 2019 at 0:22 history edited Bjørn Kjos-Hanssen CC BY-SA 4.0
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Sep 5, 2019 at 10:56 comment added user142929 It is incredible, many thanks for share your statement.
Sep 5, 2019 at 7:58 comment added Bjørn Kjos-Hanssen So in particular there's no Fermat's Last Theorem style limitation on the size of any of the variables.
Sep 5, 2019 at 7:45 history edited Bjørn Kjos-Hanssen CC BY-SA 4.0
deleted 178 characters in body
Sep 5, 2019 at 7:37 history answered Bjørn Kjos-Hanssen CC BY-SA 4.0