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
\(\{e^{\pm i(n- 1/4)t} \}_{n\in \mathbb{N}}\) is not a basis of \(L^ 2[- \pi,\pi]\) - MaRDI portal