Cayley Table/Examples/C4

Example of Cayley Table

The Cayley table of the cyclic group of order $4$ can be written:

$\qquad \begin{array}{c|cccc} & e & a & b & c \\ \hline e & e & a & b & c \\ a & a & b & c & e \\ b & b & c & e & a \\ c & c & e & a & b \\ \end{array}$