What does "$<\!\!<\!\!<$" mean? What does the symbol $&lt;\!\!&lt;\!\!&lt;$ mean? It is normally followed by a number. An example: 

It would be appreciated if you could explain it in fairly basic terms.
$$x&lt;\!\!&lt;\!\!&lt;k$$ normally means cyclic rotation of a bit string $x$ to the left by $k$ bits.