Deprecated: Use of MediaWiki\Skin\Skin::appendSpecialPagesLinkIfAbsent was deprecated in MediaWiki 1.44. [Called from MediaWiki\Skin\Skin::buildSidebar in /var/www/html/w/includes/skins/Skin.php at line 1639] in /var/www/html/w/includes/debug/MWDebug.php on line 386
Universal quantifier
From Wikipedia
Revision as of 08:54, 24 November 2012 by imported>Quondum(Undid revision by Gregbard – Do not confuse the concept with a particular symbol used in denoting it; take this to the talk page before reverting)