If a person sees his rabbi from far away, does that fulfill the mitzvah of greeting one's teacher?

This source-based Torah study examines: If a person sees his rabbi from far away, does that fulfill the mitzvah of greeting one's teacher? It follows the canonical Hebrew discussion and the classical sources cited there, preserving the distinctions and review status of the original. This localized layer is for study and discovery only; it is not practical halakhic, medical, legal, scientific, safety or pastoral advice.