• History of Exact Sciences in India
• Indian Knowledge Systems

• Room no – HSB 239D
• E-mail : aditya[at]iitm[.]ac[.]in
• Phone : +91 (44) 2257 4544

• IIT Madras
• IIT Bombay
• BITS Hyderabad
• Procter & Gamble
• William J. Clinton Foundation
• Bain & Company

• Aditya Kolachana, K. Mahesh and K. Ramasubramanian (2025). “Precise determination of the ascendant in the Lagnaprakaraṇa – V”. In: Indian Journal of History of Science 60.2, pp. 103–120. https://insa.nic.in/(S(p3b42vmk5crtmmkeovu3oa14))/writereaddata/UpLoadedFiles/IJHS/IJHS_60_2_1.pdf
• Nagakiran Yelluru, G. Sreeram, Venketeswara Pai and Aditya Kolachana (2025).”Tithinirṇaya: A Calendrical Text of the Mādhva Tradition for Religious Observations”. In: History of Science in South Asia 13, pp. 50–152. https://journals.library.ualberta.ca/hssa/index.php/hssa/article/view/113/154  
• J. Dhammaloka, Aditya Kolachana and Clemency Montelle (2025). “Visualising Eclipses: Graphical Constructions of Eclipse Phenomena in the Sanskrit Astral Sciences”. In: Journal of History of Science and Technology 19.1, pp. 70–99. https://sciendo.com/article/10.2478/host-2025-0004
• G. Sreeram and Aditya Kolachana (2024). “The saṃyoga-meru: A combinatorial tool in the Saṅgīta-ratnākara”. In: Historia Mathematica 66, pp. 14 – 25. https://www.sciencedirect.com/science/article/pii/S0315086024000053?via%3Dihub
• Nagakiran Yelluru and Aditya Kolachana (2023). “Geometry of prāṇakalāntara in the Lagnaprakaraṇa”. In: Indian Journal of History of Science 58.3 , pp. 171–180. https://insa.nic.in/writereaddata/UpLoadedFiles/IJHS/IJHS_58_3_2.pdf
• K. Mahesh, Aditya Kolachana and K. Ramasubramanian (2021). “Combinatorial techniques in Munīśvara’s Nisṛṣṭārthadūtī”. In: Indian Journal of History of Science 56.3-4 , pp. 171–181. https://insa.nic.in/writereaddata/UpLoadedFiles/IJHS/2.pdf
• Aditya Kolachana, K. Mahesh and K. Ramasubramanian (2021). “Precise determination of the ascendant in the Lagnaprakaraṇa – IV”. In: Indian Journal of History of Science 56.1, pp. 1–13. https://insa.nic.in/writereaddata/UpLoadedFiles/IJHS/1-13.pdf
• Aditya Kolachana, K. Mahesh and K. Ramasubramanian (2020). “Precise determination of the ascendant in the Lagnaprakaraṇa – III”. In: Indian Journal of History of Science 55.2, pp. 99–112. https://insa.nic.in/writereaddata/UpLoadedFiles/IJHS/Vol55_2_2020__Art01.pdf
• Aditya Kolachana, K. Mahesh and K. Ramasubramanian (2020). “Precise determination of the ascendant in the Lagnaprakaraṇa – II”. In: Indian Journal of History of Science 55.1, pp. 1–25. https://insa.nic.in/writereaddata/UpLoadedFiles/IJHS/Vol55_1_2020__Art01.pdf
• Aditya Kolachana, K. Mahesh and K. Ramasubramanian (2019). “Precise determination of the ascendant in the Lagnaprakaraṇa – I”. In: Indian Journal of History of Science 54.3, pp. 304–316. https://insa.nic.in/writereaddata/UpLoadedFiles/IJHS/Vol54_3_2019__Art04.pdf
• Aditya Kolachana, K. Mahesh and K. Ramasubramanian (2019). “A brief introduction to the mathematics of the Śulbasūtras”. In: Blackboard – Bulletin of Mathematics Teachers’ Association (India) 2, pp. 63–76. https://www.mtai.org.in/wp-content/uploads/2019/11/blackboard2.pdf
• Aditya Kolachana, K. Mahesh and K. Ramasubramanian (2019). “Determination of kālalagna in the Lagnaprakaraṇa”. In: Indian Journal of History of Science 54.1, pp. 1–12. https://insa.nic.in/writereaddata/UpLoadedFiles/IJHS/Vol54_1_2019__Art01.pdf
• Aditya Kolachana, K. Mahesh, Clemency Montelle and K. Ramasubramanian (2018). “Determination of ascensional difference in the Lagnaprakaraṇa”. In: Indian Journal of History of Science 53.3, pp. 302–316. https://insa.nic.in/writereaddata/UpLoadedFiles/IJHS/Vol53_3_2018__Art06.pdf
• Aditya Kolachana, [and 8 others] (2018) “The Candrārkī of Dinakara: A text related to solar and lunar tables”. In: Journal for the History of Astronomy 49.3, pp. 306–344.
• Aditya Kolachana, [and 8 others] (2018) “A critical edition of the Candrārkī of Dinakara”. In: History of Science in South Asia 6, pp. 127–161. https://journals.library.ualberta.ca/hssa/index.php/hssa/article/view/35/90
• Aditya Kolachana, K. Mahesh and K. Ramasubramanian (2018). “Mādhava’s multi-pronged approach for obtaining the prāṇakalāntara”. In: Indian Journal of History of Science 53.1, pp. 1–15. https://insa.nic.in/writereaddata/UpLoadedFiles/IJHS/Vol53_1_2018__Art01.pdf
• K. Mahesh, Aditya Kolachana and K. Ramasubramanian (2018). “An appraisal of the Greek and Indian approaches in determining the surface area of a sphere”. In: The Journal of the Indian Mathematical Society 85.1–2, pp. 139–169.
• K. Ramasubramanian, K. Mahesh and Aditya Kolachana (2018). “The Līlā of Līlāvatī ”. In: Bhāskaraprabhā. Ed. by K. Ramasubramanian, Takao Hayashi, and Clemency Montelle. Culture and History of Mathematics 11. New Delhi: Hindustan Book Agency, pp. 59–101.
• Aditya Kolachana, K. Mahesh and K. Ramasubramanian (2017). “Novel proofs for summations in the Nisṛṣṭārthadūtī”. In: Indian Journal of History of Science 52.2, pp. 124–137. https://insa.nic.in/writereaddata/UpLoadedFiles/IJHS/Vol52_2_2017__Art02.pdf
• Aditya Kolachana and K. Ramasubramanian (2015). “A Study of Parameśvara’s record of eclipses”. In: Proceedings of Intensive Workshop on Ancient and Medieval Eclipse Data: Compilation of Eclipse Data and Examination of their Reliability, Tokyo, Japan, November 27–28, 2014. Ed. by Mitsuru Sôma and Kiyotaka Tanikawa. Tokyo: National Astronomical Observatory of Japan, pp. 53–64.
• Aditya Kolachana and K. Ramasubramanian (2015). “Indian records of historical eclipses and their significance”. In: Gaṇita Bhāratī 37.1–2, pp. 145–162.

Edited Collection:

• Aditya Kolachana, K. Mahesh and K. Ramasubramanian, eds (2019). “Studies in Indian Mathematics and Astronomy”, Culture and History of Mathematics 12, New Delhi: Hindustan Book Agency and Springer. 742 pages.

• Aditya Kolachana (2025). “History of Exact Sciences in India”, National Conference on Bharatiya Gyan Parampara & IITs, IIT Bhilai, Chhattisgarh, India.

  Aditya Kolachana (2025). “Practical problems in Indian mathematics works”, Conference on South Asia’s Manuscript Traditions and Mathematical Contributions, India International Centre, New Delhi, India.
• Aditya Kolachana (2025). “Combinatorics of the saṃyoga-meru in the Saṅgīta-ratnākara”, 27th International Congress of History of Science and Technology, Dunedin, New Zealand.
• Aditya Kolachana (2025). “Combinatorics of the saṃyoga-meru in the Saṅgīta-ratnākara”, 19th World Sanskrit Conference, Kathmandu, Nepal.
• Aditya Kolachana (2025). “An overview of Acyuta Piṣāraṭi’s Uparāgakriyākrama”, Gaṇita Sammelan, IIT Gandhinagar, Gujarat, India.
• Aditya Kolachana (2024). “An overview of syzygy and lunar eclipse computations in the Uparāgakriyākrama of Acyuta Piṣāraṭi”, A Global History of Eclipse Reckoning (A Mathematics for Humanity Workshop), International Centre for Mathematical Sciences, Edinburgh, UK.
• Aditya Kolachana (2024). “Mādhava’s sophisticated spherical trigonometry in verse”, Joint Mathematics Meetings, San Francisco, USA.
• Aditya Kolachana (2023). “The saṃyoga-meru: A combinatorial tool in the Saṅgīta-ratnākara”, 2nd Conference of the International Academy of History of Science, Athens, Greece.
• Aditya Kolachana (2022). “The pedagogical significance of the Līlāvatī”, 88th Annual Conference of the Indian Mathematical Society: An International Meet, BIT Mesra, Ranchi, India.
• Aditya Kolachana (2022). “Extant manuscripts of Pṛthūdaka’s commentary on Brāhmasphuṭasiddhānta”, International Conference on History of Mathematics, IIT Madras, Chennai, India.
• Aditya Kolachana (2022). “An overview of Mādhava’s Lagnaprakaraṇa”, International Conference on Puranic and Siddhantic Cosmology, Govardhan Eco Village, Mumbai, India.
• Aditya Kolachana (2022). “The līlā of the Līlāvatī”, International Conference on Indian Contribution to Mathematics — Ancient & Modern, Ethiraj College for Women, Chennai, India.
• Aditya Kolachana (2021). “Mādhava’s Lagnaprakaraṇa and its influence on the Kerala school”, 26th International Congress of History of Science and Technology, Prague, Czech Republic.
• Aditya Kolachana (2020). “An in-depth look at the first method of udayalagna computation in the Lagnaprakaraṇa”, International Web-Conference on History of Mathematics, Indian Society for History of Mathematics.
• Aditya Kolachana (2020). “The Indian luni-solar calendar”, Workshop on Ancient Indian Mathematics and Astronomy, Indian Institute of Technology Madras, Chennai, India.
• Aditya Kolachana (2019). “The Āryabhaṭasiddhānta: Prof. Shukla’s reconstruction and study of Āryabhaṭa’s lost work”, International Symposium on Astral Sciences in Asia, Indian Institute of Technology Bombay, Maharashtra, India.
• Aditya Kolachana and K. Mahesh (2018). “Determination of kālalagna in the Lagnaprakaraṇa”, Conference on History and Development of Mathematics, Sri Chandrasekharendra Saraswathi Viswa Mahavidyalaya, Enathur, India.
• Aditya Kolachana (2018). “Novel relations for the ascensional difference in Mādhava’s Lagnaprakaraṇa”, Seminar on Contributions of Prof. K. V. Sarma to the Study of Indian Astronomy and Mathematics, Prof. K. V. Sarma Research Foundation, Chennai, India.
• Aditya Kolachana and K. Mahesh (2017). “Novel mathematical modelling of prāṇakalāntara by Mādhava”, International Conference on Exploring the History of Indian Mathematics, Indian Institute of Technology Gandhinagar, Gujarat, India.
• K. Mahesh and Aditya Kolachana (2017). “Contributions of lesser known mathematicians brought forth by Munīśvara”, International Conference on Exploring the History of Indian Mathematics, Indian Institute of Technology Gandhinagar, Gujarat, India.
• Aditya Kolachana (2017). “Determination of the ascendant in the Kerala school of Indian astronomy”, 25th International Congress of History of Science and Technology, Rio de Janeiro, Brazil.
• Aditya Kolachana (2017). “Evolution of udayalagna calculations in India”, International Symposium on History of Science in India, University of Canterbury, Christchurch, NZ.
• Aditya Kolachana (2016). “Some interesting mathematical proofs in the Nisṛṣṭārthadūtī”, Conference on History of Mathematical Sciences, National Institute of Technology Imphal, Manipur, India.
• Aditya Kolachana (2015). “Lessons from ancient lore: Rights, duties, and governance”, 16th World Sanskrit Conference, Bangkok, Thailand.
• K. Ramasubramanian and Aditya Kolachana (2014). “Siddhantic period: Calculation of eclipses in India”, Workshop on Ancient and Medieval Eclipses, National Astronomical Observatory of Japan, Tokyo, Japan.

• Best Teacher Award, IIT Madras
• Young Historian of Science Award, Indian National Science Academy
• Award for Excellence in Ph.D. Research, IIT Bombay

• Member, Executive Council, Indian Society for History of Mathematics
• Member, Editorial Board, History of Science in South Asia

• Led the design and development of the free, open-source, Unicode compliant, Open Type ‘Shobhika’ font with support for Devanagari, Latin, and Cyrillic scripts. The font has been adopted by many in the scholarly community across the world and is also included in the TEX archive. https://github.com/Sandhi-IITBombay/Shobhika