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 land". A further curiosity of Double Falcon's serekh are the two falcon figures, each one resting on one corner atop the bent serekh and facing each other. Egyptologists and historians are convinced that this unusual king's name has a deeper meaning. Most possibly it points to Lower Egypt and Sinai, since Double Falcon's name has been found only at these two sites. A second unusual serekh is that of King Hor-Aha. It shows the Horus falcon reaching into the serekh with his claws and holding a mace and a shield, forming the word "Aha", meaning "fighter of Horus". The arrangement