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
Four sons of Horus worship the dead person, and his name means literally "he who worships his mother". In the Coffin Texts Horus calls upon him, "Come and worship my father N for me, just as you went that you might worship my mother Isis in your name Duamutef." Isis had a dual role. Not only was she the wife of Osiris and the mother of Horus, but she was also the consort of Horus the Elder and thus the mother of the sons of Horus. This ambiguity is added to when Duamutef calls Osiris, rather than Horus his father, although kinship terms were