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
Isoclinic \(n\)-planes in \(R^{2n}\) and the Hopf-Steenrod sphere bundles \(S^{2n-1}\to S^ n\), \(n=2,4,8\) - MaRDI portal