Egyptian fraction have been called "Horus-Eye fractions" after a theory (now discredited) that they were based on the parts of the Eye of Horus symbol. They were used in the Middle Kingdom in conjunction with the later notation for Egyptian fractions to subdivide a hekat, the primary ancient Egyptian volume measure for grain, bread, and other small quantities of volume, as described in the Akhmim Wooden Tablet. If any remainder was left after expressing a quantity in Eye of Horus fractions of a hekat, the remainder was written using the usual Egyptian fraction notation as multiples of a "ro", a unit equal
Hapi (Son of Horus) together your head and your members, I have smitten your enemies beneath you, and I have given you your head forever. As one of the four pillars of Shu and one of the four rudders of heaven he was associated with the North, and is specifically referenced as such in Spell 148 in the Book of the Dead. Hapi (Son of Horus) Hapi, sometimes transliterated as Hapy, is one of the Four sons of Horus in ancient Egyptian religion, depicted in funerary literature as protecting the throne of Osiris in the Underworld. Hapi was the son of Heru-ur and Isis