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 of Osiris. Either way, Duamutef through his worship of Isis has the power to protect the deceased from harm. Duamutef was also considered one of the four pillars of Shu, a rudder of heaven, and was associated with the east. Qebehsenuef was the falcon-headed son of Horus, and protected the intestines of the deceased. He was in turn protected by the goddess Serket. It appears that his role was to refresh the dead person, and his name means literally "he who libates his siblings". Horus commands him, "Come refresh my father; betake yourself to him in your name of Qebehsenuef.