Ancient egyptian dating system
In some inscriptions the glyphs are very detailed and in full colour, in others they are simple outlines. After the Emperor Theodsius I ordered the closure of all pagan temples throughout the Roman empire in the late 4th century AD, knowledge of the hieroglyphic script was lost. Many people have attempted to decipher the Egyptian scripts since the 5th century AD, when Horapollo provided explanations of nearly two hundred glyphs, some of which were correct.Other decipherment attempts were made in the 9th and 10th by Arab historians Dhul-Nun al-Misri and Ibn Wahshiyya, and in the 17th century by Athanasius Kircher.A unit fraction is of the form 1/n where n is an integer and these were represented in numeral hieroglyphs by placing the symbol representing a "mouth", which meant "part", above the number.Here are some examples: Notice that when the number contained too many symbols for the "part" sign to be placed over the whole number, as in , then the "part" symbol was just placed over the "first part" of the number.One just adds the individual symbols, but replacing ten copies of a symbol by a single symbol of the next higher value.Fractions to the ancient Egyptians were limited to unit fractions (with the exception of the frequently used ).The Egyptians had a writing system based on hieroglyphs from around 3000 BC.
The use of this designation in dating has nothing to do with "removing Christ from the calendar" and everything to do with accuracy when dealing with historical events.
Co-regencies and the overlapping of certain dynasties also added to the difficulty in verifying dates, so the orthodox chronology makes a number of assumptions in order to come up with the dates given below.
However, these assumptions are not accepted by everyone.
These attempts were all based on the mistaken assumption that the hieroglyphs represented ideas and not sounds of a particular language.
The discovery, in 1799, of the Rosetta Stone, a bilingual text in Greek and the Egyptian Hieroglyphic and Demotic scripts enabled scholars such as Silvestre de Sacy, Johan David Åkerblad and Thomas Young to make real progress with their decipherment efforts, and by the 1820s Jean-François Champollion had made the complete decipherment of the Hieroglyphic script.