ब्राह्मस्फुटसिद्धान्त (ब्रह्मगुप्त - शून्य, कुट्टक, बीजगणित एवं सम्पूर्ण २१ अध्याय सान्वय सटीक)

Observations of Dr. K. M. Munshi President of the Reception Committee The Author Shri Ram Swaroop Sharma has given to the world of scholars an excellent and valuable treatise on the famous Astronomer Brahma-Gupta, son of Jiṣṇugupta, born in 589 A. D. in Bhillamala or Srimala now in Southern Marwad close to the northern frontier of modern Gujarat. The work is divided into 13 chapters and at the end of each, the learned author has given reference to other works and treatises for further study as also in support of his various conclusions. He has described Astro- nomy in Ancient India in the light of the knowledge of the subject available in different countries in his time. After giving personal details of Brahma-gupta, the author starts on a critical study of the works of that Astronomer-parti- cularly his Brahma-sphuṭa-siddhānta and Khaṇḍana-Khādya. The author has also discussed the Indian Luni-solar Astronomy, the Greek and Hindu methods in spherical Astronomy and the Epicyclic theory of ancient Indians. Discussing in detail the contribution of Brahma Gupta in Arithmetic, Algebra, in Astro- nomy and the Astronomical instruments that he used, the author has brought out the various highlights of his work and achieve- ments in comparison with those of his predecessors, successors and contemporaries in other countries. The author deserves to be congratulated for this scholarly contribution on the subject of Ancient Indian mathematics and Astronomy. —K.M. Munshi Bhartiya Vidya Bhawan Bombay