sknano.core.atoms.POAVR.vpi

POAVR.vpi

General $\pi$-orbital axis vector ($\mathbf{v}_{\pi}$) formed by the terminii of Vectors Vectors v1, v2, and v3.

$$\mathbf{v}_{\pi} = \mathbf{v}_1 + \mathbf{v}_2\ + \mathbf{v}_3$$