Editing Modulo (mathematics) (section)

===Modding out===
In general, '''''modding out''''' is a somewhat informal term that means declaring things equivalent that otherwise would be considered distinct. For example, suppose the sequence&nbsp;1&nbsp;4&nbsp;2&nbsp;8&nbsp;5&nbsp;7 is to be regarded as the same as the sequence&nbsp;7&nbsp;1&nbsp;4&nbsp;2&nbsp;8&nbsp;5, because each is a cyclicly-shifted version of the other:
:: <math>
\begin{array}{ccccccccccccc}
& 1 & & 4 & & 2 & & 8 & & 5 & & 7 \\
\searrow & & \searrow & & \searrow & & \searrow & & \searrow & & \searrow & & \searrow \\
& 7 & & 1 & & 4 & & 2 & & 8 & & 5
\end{array}
</math>
In that case, one is ''"modding out by cyclic shifts''".