A question of Babai on groups

Author:

Hickman J.L.,Neumann B.H.

Abstract

László Babai raised the question whether every infinite group G contains a set B of elements, of cardinal equal to the order of G, such that for elements a, b, c of B the equation a = bc−1b implies a = c. We show that the answer is affirmative for certain classes of groups, including the soluble groups and the countable groups, if the Axiom of Choice is assumed, but negative, even for abelian groups, if a different axiom, compatible with Zermelo-Fraenkel set theory but incompatible with the Axiom of Choice, is assumed.

Publisher

Cambridge University Press (CUP)

Subject

General Mathematics

Reference6 articles.

1. [2] Babai László , in litt.

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4. [5] Monro G.P. , “Some independence results for weak axioms of choice” (PhD thesis, University of Bristol, 1971).

Cited by 4 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Sidon Sets in Groups and Induced Subgraphs of Cayley Graphs;European Journal of Combinatorics;1985-06

2. Tournaments with given regular group;Aequationes Mathematicae;1979-12

3. Chromatic number and subgraphs of cayley graphs;Lecture Notes in Mathematics;1978

4. The construction of groups in models of set theory that fail the Axiom of Choice;Bulletin of the Australian Mathematical Society;1976-04

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