File:Z8latticeofsubgroups.png

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digraph G{       rankdir = "BT"; Wholegroup[peripheries=2,label="{e,a,a^2,a^3,a^4,a^5,a^6,a^7}; for Z/8Z notation: {0,1,2,3,4,5,6,7}; whole group"]; Trivialsubgroup[peripheries=2,label="{e}; for Z/8Z notation: {0}; trivial"]; Ordertwo[label="{e,a^4}; for Z/8Z notation: {0,4}; cyclic of order 2"]; Orderfour[label="{e,a^2,a^4,a^6}; for Z/8Z notation: {0,2,4,6}; cyclic of order 4"]; Trivialsubgroup -> Ordertwo -> Orderfour -> Wholegroup; }