Claudius Ptolemy (85 – 165) was a Greek-Roman mathematician who was the author of the famous treatise best known as Almagest ("the best").IPA:
[ˈklɔːdiəs ˈtɒləmi]
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Claudius Ptolemy (85 – 165) was a Greek-Roman mathematician who was the author of the famous treatise best known as Almagest ("the best").