Deprecated: $wgMWOAuthSharedUserIDs=false is deprecated, set $wgMWOAuthSharedUserIDs=true, $wgMWOAuthSharedUserSource='local' instead [Called from MediaWiki\HookContainer\HookContainer::run in /var/www/html/w/includes/HookContainer/HookContainer.php at line 135] in /var/www/html/w/includes/Debug/MWDebug.php on line 372
On integer solutions \(x_1,\dots,x_n,\) \(k_1,\dots,k_n,\) \(k\) of the equation \(x_1\text{arctg\,}\frac{1}{k_1}+x_2\text{arctg}\,\frac{1}{k_2}+ \cdots+x_n\text{arctg}\,\frac{1}{k_n}=k\cdot\frac{\pi}{4}\). - MaRDI portal

On integer solutions \(x_1,\dots,x_n,\) \(k_1,\dots,k_n,\) \(k\) of the equation \(x_1\text{arctg\,}\frac{1}{k_1}+x_2\text{arctg}\,\frac{1}{k_2}+ \cdots+x_n\text{arctg}\,\frac{1}{k_n}=k\cdot\frac{\pi}{4}\).

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