Is there a standard notation for representing disjoint inequalities? For example, let's say that I have an equation that may be solved under the following conditions:
$ x \leq a$ OR $ x \geq a+b$
is there a standard way to express an OR condition with inequalities? I thought of combining the two as:
$x \leq a \leq x-b$
But this is somewhat confusing because $a$ is a constant, and it looks like the upperbound is smaller than the lower bound. Any suggestions?