Jyotihshastra: Astral and Mathematical Literature c4.s2.9

c4.s2.9

Āryabhaṭa³¹ was 23 years old in 3600 Kali = A.D. 499 (A Kālakriyā 10) and wrote his Āryabhaṭīya³² at Kusumapura (A Gaṇitapāda 1), which is identified by Bhāskara in his commentary on this verse with Pāṭaliputra (p. 45). The same Bhāskara, in a series of examples relating to the kuṭṭaka, refers to the Aśmakasya gaṇita (p. 138), or Aśmakīya (pp. 140, 146, 147, and 148), or Aśmaka as an authority on the subject, and he applies to the Āryabhaṭīya the epithet Aśmaka (e.g., in MB 1, 3). Scholars, beginning at least with Nīlakaṇṭha (on A Gaṇitapāda 1), have contended on this basis that Āryabhaṭa was born in the Aśmaka country between the Godāvarī and the Narmadā; but the epithet may only reflect Bhāskara’s own origin and training in Aśmaka.