Theano (Θεανώ) is the Greek word for "divine" or "godly." Theano of Croton (6th c. BCE) was the wife and pupil of Pythagoras — herself a philosopher and mathematician who wrote treatises on virtue, piety, and the immortality of the soul.
She is one of the earliest known female philosophers in Greek tradition.
Theano reduces to one — the number of Greek philosophy.