Top network posts

• 75 Why is there no Cayley's Theorem for rings?
• 60 Subgroups as isotropy subgroups and regular orbits on tuples
• 50 Is there a group with exactly 92 elements of order 3?
• 47 Enumerating all subgroups of the symmetric group
• 46 Groups with all subgroups normal
• 42 The transpose of a permutation matrix is its inverse.
• 41 What can we say of a group all of whose proper subgroups are abelian?
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