By AD 150, Ptolemy, influenced by Hipparchus and the Babylonians, was using a symbol for zero in his work on mathematical astronomy called the Syntaxis Mathematica, also known as the Almagest.
ɣur 150 n awǎtǎy data annǎbi ɣisa, Ptolemy,omar Hipparchus d Kel Babylone tan , exǎddǎm s mǎris i bǎnnǎn daɣ alxidmǎt net fal astronomi tan mǎtematik tawǎɣrit s Syntaxis Mathematica, tiwǎssǎnǎt s isim wan Almagest.