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 Heresy (fictional event) significant development was initial release of the "Horus Heresy" miniatures wargame expansion. This in effect repositioned the concept as a foreground element within the main "Warhammer 40,000" gaming system, thereby extending the related universe's active setting to the Horus Heresy era. In February 2013 the first Heresy-specific event, the 2-day Horus Heresy Weekender, was announced. In addition to regular edition products, releases include special editions such as anniversary editions, collector's editions, web exclusives, and bundle offers. However some components, including the majority of pre-"Horus Heresy" book series products or works, may be out of print, discontinued, or obsolete, and generally