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 that of Horus Sa which would place Sa in the 2nd dynasty since Hotepsekhemwy was the first ruler of that dynasty. Thus, Helck proposed that Horus Sa is the Horus-name of another shadowy ruler of the 2nd dynasty, Weneg, whose Horus-name is otherwise unknown. The Egyptologist Jochem Kahl recently challenged this hypothesis, identifying Weneg with Raneb. Alternatively, Kaplony reconstructed the Horus-name of Weneg from the Cairo fragment of the Palermo stone as Wenegsekhemwy. In both cases, Horus Sa cannot be the Horus-name of Weneg and the two would not designate the same king. Consequently, Kaplony equated Horus Sa with "njswt-bity