v\in\mathbb{R} \wedge  u\in(0,\pi)

u\in\langle-1,1\rangle \wedge v\in\langle-\frac{\pi}{2},\frac{\pi}{2}\rangle

v\in\langle-1,1\rangle \wedge u\in\langle 0,\pi\rangle

u\in\mathbb{R} \wedge v\in(0,\pi)

u\in\langle-1,1\rangle \wedge v\in(-\frac{\pi}{2},\frac{\pi}{2})

u\in\langle-1,1\rangle \wedge v\in\langle 0,\pi\rangle

v\in\mathbb{R} \wedge u\in(-\frac{\pi}{2},\frac{\pi}{2})

v\in\langle-1,1\rangle \wedge u\in\langle-\frac{\pi}{2},\frac{\pi}{2}\rangle

v\in\langle-1,1\rangle \wedge u\in(-\frac{\pi}{2},\frac{\pi}{2})