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
Zur Kegelschnittslehre. - MaRDI portal

Deprecated: Use of MediaWiki\Skin\SkinTemplate::injectLegacyMenusIntoPersonalTools was deprecated in Please make sure Skin option menus contains `user-menu` (and possibly `notifications`, `user-interface-preferences`, `user-page`) 1.46. [Called from MediaWiki\Skin\SkinTemplate::getPortletsTemplateData in /var/www/html/w/includes/Skin/SkinTemplate.php at line 691] in /var/www/html/w/includes/Debug/MWDebug.php on line 372

Deprecated: Use of MediaWiki\Skin\BaseTemplate::getPersonalTools was deprecated in 1.46 Call $this->getSkin()->getPersonalToolsForMakeListItem instead (T422975). [Called from Skins\Chameleon\Components\NavbarHorizontal\PersonalTools::getHtml in /var/www/html/w/skins/chameleon/src/Components/NavbarHorizontal/PersonalTools.php at line 66] in /var/www/html/w/includes/Debug/MWDebug.php on line 372

Deprecated: Use of QuickTemplate::(get/html/text/haveData) with parameter `personal_urls` was deprecated in MediaWiki Use content_navigation instead. [Called from MediaWiki\Skin\QuickTemplate::get in /var/www/html/w/includes/Skin/QuickTemplate.php at line 131] in /var/www/html/w/includes/Debug/MWDebug.php on line 372

Zur Kegelschnittslehre. (Q1514900)

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scientific article; zbMATH DE number 2668846
Language Label Description Also known as
English
Zur Kegelschnittslehre.
scientific article; zbMATH DE number 2668846

    Statements

    Zur Kegelschnittslehre. (English)
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    1900
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    Die Tangenten \(a\) und \(b\) in zwei Punkten \(A\) und \(B\) eines Kegelschnitts schneiden die Verbindungslinie der diametral entgegengesetzten Punkte \(A'\) und \(B'\) in zwei Punkten \(A''\) und \(B''\) so, dass \(A'A''\) und \(B'B''\) gleich sind. Diesem analytisch bewiesenen Satze gehen einige Tangenten-Constructionen voran.
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    Identifiers