Karanapaddhati of Putumana Somayaji

Chapter 1. Mean planets and the sakabdasa skara.- Chapter 2. Obtaining smaller gunas and haras.- Chapter 3. Computation of the khanda, dhruva, etc. of the Moon.- Chapter 4. Obtaining the harakas for the planets.- Chapter 5. Examination of the revolution numbers etc.- Chapter 6. Relation between the circumference and the diameter and computation of Rsines.- Chapter 7. Obtaining the planetary longitudes.- Chapter 8. Gnomonic shadow.- Chapter 9. Ascendent at the meridian transit.- Chapter 10. Obtaining the Right Ascension, etc.

VENKETESWARA PAI is assistant professor at the Department of Humanities, Indian Institute of Science Education and Research (IISER), Pune. He worked on Karanapaddhati to obtain his PhD from the Indian Institute of Technology (IIT) Bombay in 2011. Subsequently, he was a faculty member at the SASTRA University, Thanjavur, Tamil Nadu, India, before joining IISER, Pune. His research interests include Indian astronomy and mathematics. He is a recipient of the Young Historian of Science Award of the Indian National Science Academy (INSA) in 2014. He is also a member of the Indian National Young Academy of Science (INYAS).
K. RAMASUBRAMANIAN is professor at the Cell for Science and Technology in Sanskrit, Indian Institute of Technology (IIT) Bombay. He worked on nonlinear dynamics to obtain his PhD from the University of Madras in 2001. He has been working in the area of Indian astronomy and mathematics for more than 25 years and is also a scholar in Advaita-Vedanta. He was awarded the Maharsi Badarayana Vyas Samman by the President of India in 2008.
M.S. SRIRAM worked on field theory and obtained his PhD in physics in 1978 at Indian Institute of Technology (IIT) Kanpur. He was a faculty member at the Allahabad University for five years. Subsequently, he joined the Department of Theoretical Physics, University of Madras, and retired as the head of the department in 2011. He has worked in the areas of high energy physics and nonlinear dynamics. He has been engaged in research in Indian astronomy and mathematics for over 25 years. Presently he is associated with Prof. K.V. Sarma Research Foundation, Chennai.
M.D. SRINIVAS did his PhD in the theoretical physics at the University of Rochester, U.S.A. He was a faculty member at the Department of Theoretical Physics, University of Madras, for two decades and worked on the conceptual and mathematical foundations of quantum mechanics.He has been associated with the Centre for Policy Studies, Chennai, for over two decades and

"The publication of Karanapaddhati is a significant event for our understanding of the History and Mathematics and Astronomy. ... it opens a new phase of analysis that gives us the hope of a better understanding of the evolution of astronomy in India as driven by a keen sense of reality ... and the subject who deals with both." (Satyanad Kichenassamy, Indian Journal of History of Science, Vol. 56, 2021)"This useful work contains an English translation of the Karanapaddhati of Putumana Somayaji along with extensive explanatory notes. ... In sum, this solid piece of work, invaluable for those studying medieval Indian astronomy and mathematics, especially of Kerala school of astronomy and mathematics." (Ranjan Roy, Mathematical Reviews, October, 2018)