Open Access
2015 On the cardinality of infinite symmetric groups
Matt Getzen
Involve 8(5): 749-751 (2015). DOI: 10.2140/involve.2015.8.749

Abstract

A new proof is given that the symmetric group of any set X with three or more elements, finite or infinite, has cardinality strictly greater than that of X. Use of the axiom of choice is avoided throughout.

Citation

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Matt Getzen. "On the cardinality of infinite symmetric groups." Involve 8 (5) 749 - 751, 2015. https://doi.org/10.2140/involve.2015.8.749

Information

Received: 7 January 2014; Accepted: 12 July 2014; Published: 2015
First available in Project Euclid: 22 November 2017

zbMATH: 1325.03055
MathSciNet: MR3404654
Digital Object Identifier: 10.2140/involve.2015.8.749

Subjects:
Primary: 03E99
Secondary: 03E25 , 20B30

Keywords: axiom of choice , infinite symmetric groups , Set theory

Rights: Copyright © 2015 Mathematical Sciences Publishers

Vol.8 • No. 5 • 2015
MSP
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