Aryabhatiya
Aryabhatiya ( IAST: ' ) or Aryabhatiyam ( ' ) , a Sanskrit astronomical treatise , is the "magnum opus" and only known surviving work of the 5th century Indian mathematician Aryabhata . 
<triplet> Aryabhatiya <subj> Sanskrit astronomical treatise <obj> main subject <subj> Aryabhata <obj> author <triplet> Aryabhatiya <subj> Sanskrit astronomical treatise <obj> main subject <subj> Aryabhata <obj> author <triplet> Aryabhata <subj> Aryabhatiya <obj> notable work <subj> Aryabhatiya <obj> notable work