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I must take this opportunity to express my heartfelt gratitude to Shri B. B. Varma, Member of Parliament, who has never shirked in shouldering the responsibilities of managing the affairs of the Institute, first as a member of its Executive Council and now as its President. I am also thankful to Dewan Hari Krishan Das, Chairman of the Executive Council, and Shri F. C. Bedi, Treasurer of the Institute, for their ungrudging support to the cause of the Institute.
My thanks are also due to Dr. Sampurnanand, Governor of Rajasthan, who has blessed the Institute by inaugurating it and has now been kind enough to write a foreword for the present book. I am also indebted to Dr. Satya Prakash, Head of the Department of Chemistry, Allahabad University, for his having spared time to write an introduction in English for this publication. He has always been cheerfully allowing us to draw on his rich experience and wealth of knowledge. I am also grateful to Pt. Mukund Mishra, Pt. Vishwa Nath Jha, Shri Daya Shankar Dixit, and Pt. Om Datt Sharma, the learned scholars who helped me in preparing this work.
The book has been published in four volumes. Volume I includes an introduction in English by Dr. Satya Prakash, followed by the text as given in the copy of the manuscript obtained from the Bhandarkar Research Institute, Poona, with footnotes to collate the various versions found in the copies of the manuscripts procured from the Royal Asiatic Society, Bombay, the Oriental Research Institute, Baroda, and the Vishweshwaranand Vedic Research Institute, Hoshiarpur. The volume also contains a Sanskrit Bhumika Introduction/Preface from the Chief Editor and an Index of Shlokas. Volume II comprises the first nine chapters of Brāhma Sphuṭa Siddhānta, containing only those readings which we have considered as correct. It also includes the Vāsanā explanatory/doctrinal commentary of Pṛthūdaka Swāmi and Vigyān Bhashya scientific commentary in Sanskrit with Hindi translation. Volume III includes chapters 10 to 16. This volume also contains the Nutan Tilak new mark/commentary commentary of Sudhakar Dwivedi and Vigyān Bhashya in Sanskrit with Hindi translation. Volume IV comprises chapters 17 to 24 and also an Index of Shlokas contained in Volumes II, III, and IV. It also includes an appendix on Dhayāna Grhaoradeshādadhyāya chapter on instructions for meditation on planets. Another appendix in this volume contains Vāsanā commentary on Golādhyāya chapter on the sphere/celestial globe.
The Institute has planned to add to its list of publications, shortly, Samrāṭ Siddhānta The Emperor of Treatises (3000 pages and already in press), Bṛhad Yavan Jātaka Great Greek Horoscopy (2000 pages), and Panch Siddhāntikā The Five Astronomical Treatises (1600 pages).
The Indian Institute of Astronomical & Sanskrit Research considers it a proud privilege to dedicate Brāhma Sphuṭa Siddhānta to Shri S. K. Patil, Union Minister for Railways. I am highly grateful to him for his having consented to this dedication. I am also grateful to Shri K. M. Munshi and Shri Wadilal Chaturbhuj Gandhi for their kindly agreeing to my request to be President and Chairman respectively of the Reception Committee. My heartfelt thanks are also due to Shri Kanti Lal H. Shah, Honorary Secretary of the Organising Committee, and to all the members of the organising and Reception Committees for their help and cooperation in my work. I also owe a debt of gratitude