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
Horus name Sekhemib and Khasekhemwy were similarly built. Khasekhemwy went even further and placed both divine figures of Horus and Seth above his serekh, in an attempt to accentuate the dualism of a serekh name. The remarkable behaviour of the 2nd Dynasty kings can possibly be explained by the Egyptian belief that a king represented Horus and Seth in the same ways. Maybe said kings simply wished to express this dualism by willingly changing the appearance of the serekh and replacing divine figures on its top. As already mentioned, the Horus name is the oldest known and used royal title. Its introduction