Eye of Horus fractions were written as the sum of two or more unit fractions (a fraction with 1 as the numerator), with scribes possessing tables of answers (see Rhind Mathematical Papyrus 2/n table). Thus instead of , one would write + . Different parts of the Eye of Horus were thought to be used by the ancient Egyptians to represent one divided by the first six powers of two: The Rhind Mathematical Papyrus contains tables of "Horus Eye Fractions". Studies from the 1970s to this day in Egyptian mathematics have clearly shown this theory was fallacious and Jim Ritter definitely showed it
Horus Sa inscriptions. Especially the bird-sign at the top of the "Ka"-house might also depict a swallow, which would make the inscription to be read as "Wer-sa-hut-Ka" ("great protection of the Ka-house"). Ilona Regulski prefers the reading as a Horus-bird, though she doesn't explicitly see it as the name of a king. She dates the inscriptions to the end of Khasekhemwy's reign. The burial place of Horus Sa is unknown. Nabil Swelim associated Horus Sa with the unfinished enclosure of Gisr el-Mudir in west Saqqara. This hypothesis has not gained wide acceptance and the Gisr el-Mudir has been attributed to various second