[GAP Forum] simple groups

Alex Trofimuk trof1984 at rambler.ru
Mon Oct 13 10:20:33 BST 2008

-- Dear Gap Forum,
Alex Trofimuk asked:
Using function PerfectGroup(), I defined simple groups Janko J1, J2. But 
I can not find rank of their Sylow 2-subgroups. I used function 
RankPGroup().  Probably, my computer has weak power.  Help me, please, 
to find it. How to define groups Janko J3, J4 and sporadic simple groups 
Mc, Ly in system Gap. Is it possible to calculate rank of their Sylow 

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