{"title":"Some structural similarities between uncountable sets, powersets and the universe","authors":"Athanassios Tzouvaras","doi":"10.1002/malq.202100010","DOIUrl":null,"url":null,"abstract":"<p>We establish some similarities/analogies between uncountable cardinals or powersets and the class <i>V</i> of all sets. They concern mainly the Boolean algebras <math>\n <semantics>\n <mrow>\n <mi>P</mi>\n <mo>(</mo>\n <mi>κ</mi>\n <mo>)</mo>\n </mrow>\n <annotation>$\\mathcal {P}(\\kappa )$</annotation>\n </semantics></math>, for a regular cardinal κ, and <math>\n <semantics>\n <mrow>\n <mi>C</mi>\n <mo>(</mo>\n <mi>V</mi>\n <mo>)</mo>\n </mrow>\n <annotation>$\\mathcal {C}(V)$</annotation>\n </semantics></math> (the class of subclasses of the universe <i>V</i>), endowed with some ideals, especially the ideal <math>\n <semantics>\n <msup>\n <mrow>\n <mo>[</mo>\n <mi>κ</mi>\n <mo>]</mo>\n </mrow>\n <mrow>\n <mo><</mo>\n <mi>κ</mi>\n </mrow>\n </msup>\n <annotation>$[\\kappa ]^{<\\kappa }$</annotation>\n </semantics></math> for <math>\n <semantics>\n <mrow>\n <mi>P</mi>\n <mo>(</mo>\n <mi>κ</mi>\n <mo>)</mo>\n </mrow>\n <annotation>$\\mathcal {P}(\\kappa )$</annotation>\n </semantics></math>, and the ideal of sets <i>V</i> for <math>\n <semantics>\n <mrow>\n <mi>C</mi>\n <mo>(</mo>\n <mi>V</mi>\n <mo>)</mo>\n </mrow>\n <annotation>$\\mathcal {C}(V)$</annotation>\n </semantics></math>.</p>","PeriodicalId":49864,"journal":{"name":"Mathematical Logic Quarterly","volume":"68 2","pages":"136-148"},"PeriodicalIF":0.4000,"publicationDate":"2022-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Mathematical Logic Quarterly","FirstCategoryId":"100","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/malq.202100010","RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"LOGIC","Score":null,"Total":0}
引用次数: 0
Abstract
We establish some similarities/analogies between uncountable cardinals or powersets and the class V of all sets. They concern mainly the Boolean algebras , for a regular cardinal κ, and (the class of subclasses of the universe V), endowed with some ideals, especially the ideal for , and the ideal of sets V for .
期刊介绍:
Mathematical Logic Quarterly publishes original contributions on mathematical logic and foundations of mathematics and related areas, such as general logic, model theory, recursion theory, set theory, proof theory and constructive mathematics, algebraic logic, nonstandard models, and logical aspects of theoretical computer science.