सिद्धान्तशिरोमणि: गणिताध्याय (भास्कराचार्य - ग्रहगणित, मध्यमाधिकार व स्पष्टाधिकार सटीक)

xvi Bapu Deva SASTRI and WILKINSON published an English translation of the text in 1861. Yet the mathe- matical aspect of the Siddhāntaśiromaṇi has remained a terra incognita to students of Hindu Astronomy. While Phalita-Jyotiṣa-continues to be studied in traditional Sanskrit institutions, the Gaṇita-side of Astronomy is reduced to a secondary position. Realising that specialists in the twin fields of Mathematics and Astronomy have been diminishing day by day, Kendriya Sanskrit Vidyapeetha at Tirupati has started a project entitled, "Coordination of Sanskrit and Ancient Indian Sciences". Under this scheme, Dr. Arka Somayaji has now come forward to give an exposition and annotation of the Siddhāntaśiromaṇi in simple English based on the language of modern Astronomy for the benefit of the students and scholars interested in the Khagola-śāstram. Dr. Arka Somayaji is an eminent scholar in Mathe- matics and Dynamic or Spherical Astronomy. He hails from a family of "Siddhāntin-s". To whet his appetite in learning the mnemonical methodology for compiling an almanac, he studied Mathematics and Jyotiṣa (includ- ing Spherical Astronomy). He learnt the Taittirīya- saṁhitā under his brother, Dhulipala Venkatarama Avadhani of Rajahmundry. He wrote a thesis on "A Critical Study of the Ancient Hindu Astronomy", which was published in 1972. He has to his credit eight works including the Jyotirvijñānam (1964) and two Sanskrit poetical compositions (Brahmañjali and the Hanumat- vijaya-). He won the President's award in 1974.