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 Bolyai-Lobatschefskijschen Geometrie. - 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 Bolyai-Lobatschefskijschen Geometrie. (Q1501633)

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scientific article; zbMATH DE number 2653795
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English
Zur Bolyai-Lobatschefskijschen Geometrie.
scientific article; zbMATH DE number 2653795

    Statements

    Zur Bolyai-Lobatschefskijschen Geometrie. (English)
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    1904
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    Verf. weist nach, wie die Hilbertsche Begründung der Bolyai-Lobatschefskijschen Geometrie (s. F. d. M. 34, 525, 1903, JFM 34.0525.01) sich systematisch in die Gedankenreihen der projektiven Geometrie einreihen läßt. Er weist zum Schluß darauf hin, daß das von Hilbert eingeführte nichteuklidische Parallelenpostulat das Axiom von der Existenz der Schnittpunkte von Kreis und Gerade involviert.
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