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
Throwing a dart at Freiling's argument against the continuum hypothesis - 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

Throwing a dart at Freiling's argument against the continuum hypothesis (Q918547)

From MaRDI portal





scientific article; zbMATH DE number 4158624
Language Label Description Also known as
English
Throwing a dart at Freiling's argument against the continuum hypothesis
scientific article; zbMATH DE number 4158624

    Statements

    Throwing a dart at Freiling's argument against the continuum hypothesis (English)
    0 references
    1990
    0 references
    The author gives an argument which he claims is against the proposed axioms of symmetry of \textit{C. Freiling} [J. Symb. Logic 51, 190-200 (1986; Zbl 0619.03035)]; indeed, he uses the word fallacy. He gives a variant \(A_{n.d.}\) of Freiling's axiom \(A_{\aleph_ 0}\), replacing ``countable'' by ``nowhere dense'', and then notes that \(A_{n.d.}\) is not a `starting conclusion' but is in fact a known theorem. However it seems to the reviewer that this is not counter to Freiling's intuitions at all; for that, one would need a plausible variant \(A_{?}\) of Freiling's axioms which can be disproved (not proved). (And in fact Freiling himself does give stronger arguments which contradict the axiom of choice.)
    0 references
    0 references
    negation of CH
    0 references
    axioms of symmetry
    0 references
    0 references

    Identifiers