mathematics, a quasisimple group (also known as a covering group) is a group that is a perfect central extension E of a simple group S. In other words...

theorem. Almost simple group Characteristically simple group Quasisimple group Semisimple group List of finite simple groups Knapp (2006), p. 170 Rotman...

covering group or Darstellungsgruppe. The Schur covers of the finite simple groups are known, and each is an example of a quasisimple group. The Schur...

group Monster group Baby Monster group Bimonster Projective group Reductive group Simple group Quasisimple group Special linear group Symmetric group...

fundamental group of S O ( 3 ) / I 60 {\displaystyle SO(3)/I_{60}} is a perfect group of order 120. More generally, a quasisimple group (a perfect central...

"On finitely generated profinite groups. I: Strong completeness and uniform bounds. II: Products in quasisimple groups". Ann. Math. (2). 165 (1): 171–238...

C. The idea is that these groups have a centralizer of an involution with a component that is a smaller quasisimple group, which can be assumed to be...

In mathematics, in the field of group theory, a component of a finite group is a quasisimple subnormal subgroup. Any two distinct components commute. The...

T-groups: Every simple group is a T-group. Every quasisimple group is a T-group. Every abelian group is a T-group. Every Hamiltonian group is a T-group...

simple group is an extension of a solvable group by a simple group. Quasisimple group Semisimple group Almost simple group at the Group Properties wiki...