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 called themselves "followers of Horus", and Horus became the tutelary deity of the unified nation and its kings. Yet Horus and Set cannot be easily equated with the two-halves of the country. Both deities had several cult centers in each region, and Horus is often associated with Lower Egypt and Set with Upper Egypt. Other events may have also affected the myth. Before even Upper Egypt had a single ruler, two of its major cities were Nekhen, in the far south, and Nagada, many miles to the north. The rulers of Nekhen, where Horus was the patron deity, are generally