Unformatted text preview: ² . Determine if A is a unit in M 2 ( Z n ) for n = 1 , 2 , 3 ,..., 10 and ﬁnd its inverse. Exercise 3. Use the correspondence principle to draw the subgroup lattice of Z 84 . [ Hint: Start with the lattice of subgroups of Z that contain h 84 i .]...
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This note was uploaded on 02/29/2012 for the course MATH 3362 taught by Professor Ryandaileda during the Spring '10 term at Trinity University.
- Spring '10