The concept of zero was developed in India as early as the Gupta period in the 5th century. The Indian scholar Pingala (c. 200 BC) used the Sanskrit word sunya explicitly to refer to zero. The origin of the modern decimal-based place value notation can be traced to the Aryabhatiya(c. 500), which states sthānāt sthānaṁ daśaguṇaṁ syāt " from place to place each is ten times the preceding".