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Old 2005-09-18, 13:48   #2
R.D. Silverman
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"Bob Silverman"
Nov 2003
North of Boston

23×937 Posts

Originally Posted by DSC
please help me with this horrible problem anyone, thanks!

Determine the subgroup lattice for Zp^n, where p is prime and n is some positive integer.

I trust that you really mean Zp^n and not GF(p^n).

The integers co-prime to p^n form a multiplicative group mod p^n.
The integers mod (say) p^n-1 do not form a group mod p^n.

I don't understand what you mean by "sub-group lattice'
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