adjective
In mathematics, qualifies a number that is composed of a columnar number and a pyramidal one, such that the side of the first is larger than that of the second by one
From Ancient Greek πύργος (púrgos, “tower”) + -oïde + -al.
In mathematics, qualifies a number that is composed of a columnar number and a pyramidal one, such that the side of the first is larger than that of the second by one
From Ancient Greek πύργος (púrgos, “tower”) + -oïde + -al.