Timeline for Can the equation $n=x^6-y^6+z^3-w^3$ with $x,y,z,w\in\mathbb Q_{\ge0}$ be solved via an identity?
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| Sep 8, 2022 at 22:07 | comment | added | Zhi-Wei Sun | In A351321 at OEIS (oeis.org/A351321), I conjectured that each nonnegative integer $n$ can be written as $p^6+r^3-(q^6+s^3)$ with $q^6+s^3\le n^2$, where $p,q,r,s$ are nonnegative rational numbers. Can you also explain this? | |
| Sep 7, 2022 at 10:11 | history | edited | Maciej Ulas | CC BY-SA 4.0 |
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| Sep 7, 2022 at 10:09 | history | edited | user44143 | CC BY-SA 4.0 |
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| Sep 7, 2022 at 9:19 | history | edited | Maciej Ulas | CC BY-SA 4.0 |
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| Sep 7, 2022 at 8:17 | history | edited | Maciej Ulas | CC BY-SA 4.0 |
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| Sep 7, 2022 at 8:08 | history | edited | Maciej Ulas | CC BY-SA 4.0 |
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| Sep 7, 2022 at 7:55 | history | answered | Maciej Ulas | CC BY-SA 4.0 |