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 and Harsiese "Horus, Son of Isis". Nekheny may have been another falcon god worshipped at Nekhen, city of the falcon, with whom Horus was identified from early on. Horus may be shown as a falcon on the Narmer Palette, dating from about the 31st century BC. In early Egypt, Horus was the brother of Isis, Osiris, Set and Nephthys. As different cults formed, he became the son of Isis and Osiris. Isis remained the sister of Osiris, Set and Nephthys. The "Pyramid Texts" (c. 2400–2300 BC) describe the nature of the pharaoh in different characters as both Horus and Osiris.