/ / pi\ /pi 7*pi\ /4*pi \\
Or|And|0 <= x, x <= --|, And|-- <= x, x <= ----|, And|---- <= x, x <= 2*pi||
\ \ 6 / \3 6 / \ 3 //
$$\left(0 \leq x \wedge x \leq \frac{\pi}{6}\right) \vee \left(\frac{\pi}{3} \leq x \wedge x \leq \frac{7 \pi}{6}\right) \vee \left(\frac{4 \pi}{3} \leq x \wedge x \leq 2 \pi\right)$$
((0 <= x)∧(x <= pi/6))∨((pi/3 <= x)∧(x <= 7*pi/6))∨((4*pi/3 <= x)∧(x <= 2*pi))
pi pi 7*pi 4*pi
[0, --] U [--, ----] U [----, 2*pi]
6 3 6 3
$$x\ in\ \left[0, \frac{\pi}{6}\right] \cup \left[\frac{\pi}{3}, \frac{7 \pi}{6}\right] \cup \left[\frac{4 \pi}{3}, 2 \pi\right]$$
x in Union(Interval(0, pi/6), Interval(pi/3, 7*pi/6), Interval(4*pi/3, 2*pi))