"No one outside India knows about Aryabhata or Brahmagupta, who were mathematicians of absolutely equal stature to Pythagoras and Archimedes," William Dalrymple (acclaimed author and historian) The Concept Of Zero Bakhshali manuscript, the Oldest record of Zero Symbol (Dotted form), 3rd-4th century CE, via University of Oxford Present mathematics owes it to ancient Indian scholars for developing the skill of counting. Trading of materials and ideas was a prevalent activity between ancient India