Revision as of 05:42, 16 April 2021 edit PhS (talk \| contribs) Extended confirmed users 1,376 edits add Short description, as per WP:SHORTDESC ← Previous edit		Revision as of 19:48, 7 May 2021 edit undo OAbot (talk \| contribs) Bots 646,409 edits m Open access bot: doi added to citation with #oabot. Next edit →
Line 18: \| url = http://matwbn.icm.edu.pl/ksiazki/fm/fm16/fm16125.pdf \| volume = 16 \| year = 1930\| doi = 10.4064/fm-16-1-386-389 \| doi-access = free }}.</ref> In modern [[axiomatic set theory]] the order-extension principle is itself taken as an axiom, of comparable ontological status to the axiom of choice. The order-extension principle is implied by the [[Boolean prime ideal theorem]] or the equivalent [[compactness theorem]],<ref>{{citation

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