- #1
aliciaislol
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Homework Statement
Show that II18 / <3> is isomorphic to II3.
Homework Equations
II18 = {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18}
<3> = {0,3,6,9,12,15}
II3 = {1,2,3}
II18 / <3> = {3,6,9,12,15,18}