pmqn阶(1≤m,n≤3,p,q为素数)群正规的sylow子群的存在性
pmqn계(1≤m,n≤3,p,q위소수)군정규적sylow자군적존재성
The existence of the normal sylow subgroups in pmqn order (1≤m, n≤3,p,q is a prime number) groups
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