This is an old revision of this page, as edited by TakuyaMurata(talk | contribs) at 01:09, 13 January 2019(merge into ideal theory; probably better to discuss it as a part of a larger article, least for now.). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.Revision as of 01:09, 13 January 2019 by TakuyaMurata(talk | contribs)(merge into ideal theory; probably better to discuss it as a part of a larger article, least for now.)