In mathematics, in the area of abstract algebra known as group theory, an A-group is a type of group that is similar to abelian groups. The groups were first studied in the 1940s by Philip Hall, and are still studied today. A great deal is known about their structure.
An A-group is a finite group with the property that all of its Sylow subgroups are abelian.
The term A-group was probably first used in ( Hall 1940, Sec. 9), where attention was restricted to soluble A-groups. Hall's presentation was rather brief without proofs, but his remarks were soon expanded with proofs in ( Taunt 1949). The representation theory of A-groups was studied in ( Itô 1952). Carter then published an important relationship between Carter subgroups and Hall's work in ( Carter 1962). The work of Hall, Taunt, and Carter was presented in textbook form in ( Huppert 1967). The focus on soluble A-groups broadened, with the classification of finite simple A-groups in ( Walter 1969) which allowed generalizing Taunt's work to finite groups in ( Broshi 1971). Interest in A-groups also broadened due to an important relationship to varieties of groups discussed in ( Ol'šanskiĭ 1969). Modern interest in A-groups was renewed when new enumeration techniques enabled tight asymptotic bounds on the number of distinct isomorphism classes of A-groups in ( Venkataraman 1997).
The following can be said about A-groups:
In mathematics, in the area of abstract algebra known as group theory, an A-group is a type of group that is similar to abelian groups. The groups were first studied in the 1940s by Philip Hall, and are still studied today. A great deal is known about their structure.
An A-group is a finite group with the property that all of its Sylow subgroups are abelian.
The term A-group was probably first used in ( Hall 1940, Sec. 9), where attention was restricted to soluble A-groups. Hall's presentation was rather brief without proofs, but his remarks were soon expanded with proofs in ( Taunt 1949). The representation theory of A-groups was studied in ( Itô 1952). Carter then published an important relationship between Carter subgroups and Hall's work in ( Carter 1962). The work of Hall, Taunt, and Carter was presented in textbook form in ( Huppert 1967). The focus on soluble A-groups broadened, with the classification of finite simple A-groups in ( Walter 1969) which allowed generalizing Taunt's work to finite groups in ( Broshi 1971). Interest in A-groups also broadened due to an important relationship to varieties of groups discussed in ( Ol'šanskiĭ 1969). Modern interest in A-groups was renewed when new enumeration techniques enabled tight asymptotic bounds on the number of distinct isomorphism classes of A-groups in ( Venkataraman 1997).
The following can be said about A-groups: