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Published on: February 15, 2016
Strongly Base-Two Groups
Timothy C Burness1, Robert M Guralnick2
1School of Mathematics, University of Bristol, Bristol, BS8 1UG UK.
Insights
This study investigates strongly base-two finite groups, where most permutation representations have a base size of 2. We focus on groups with a trivial Frattini subgroup, advancing understanding of group theory.
Area of Science:
- Group Theory
- Abstract Algebra
- Computational Group Theory
Background:
- The base size of a group action is a fundamental concept in permutation group theory.
- Understanding groups with small base sizes is crucial for classifying group properties.
- Core-free subgroups and their properties are key to analyzing group actions.
Purpose of the Study:
- To characterize strongly base-two finite groups.
- To investigate the properties of strongly base-two finite groups with a trivial Frattini subgroup.
- To contribute to the classification of finite groups based on their permutation representations.
Main Methods:
- Analysis of group actions on coset spaces G/H.
- Utilizing the definition of base size b(G, H).
- Applying properties of finite groups and their subgroups, specifically core-free subgroups.
Main Results:
- The paper focuses on the structural properties of strongly base-two finite groups.
- The study examines the implications of a trivial Frattini subgroup on these groups.
- Specific conditions and characteristics of such groups are explored.
Conclusions:
- The research provides insights into the structure of finite groups with specific permutation properties.
- The findings contribute to the ongoing classification efforts in finite group theory.
- This work deepens the understanding of strongly base-two groups and their relationship with the Frattini subgroup.
Abstract:
Let G be a finite group, let H be a core-free subgroup and let b(G, H) denote the base size for the action of G on G/H. Let be the number of conjugacy classes of core-free subgroups H of G with . We say that G is a strongly base-two group if , which means that almost every faithful transitive permutation representation of G has base size 2. In this paper, we study the strongly base-two finite groups with trivial Frattini subgroup.
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