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 King Sekhemib, "Per-en-ma'at" (meaning "he who achieves Ma'at"), is the clearest early expression of this. As already mentioned, most Egyptian kings favored Horus as their dynastic name patron. In a few cases, especially during the midst of the 2nd Dynasty, at least two serekh names seem to contradict the Horus tradition. The most prominent example is king Seth-Peribsen. He first replaced the falcon figure of his serekh by the walking animal of the god Seth. Then, his name was written in a plural form, thus being addressed to Seth as well as to Horus. The serekh names of his followers