We prove that any finite group having at most 27 non-normal proper subgroups of non-prime-power order is solvable except for G≅ A5, the alternating group of degree 5.
- Finite group
- solvable group
- subgroup of non-prime-power order
Jiangtao Shi, Cui Zhang
Research output: Contribution to journal › Journal article › Research › peer-review