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Newly Deciphered 6th-Century 'Vakya-Siddhanta' Commentary Reveals Advanced Sanskrit Models for Calculating Lunar Perigee Fluctuations

📅 April 11, 2026 📰 The Journal of Asian Studies
Newly Deciphered 6th-Century 'Vakya-Siddhanta' Commentary Reveals Advanced Sanskrit Models for Calculating Lunar Perigee Fluctuations

Scholars at the Oxford Centre for Hindu Studies have successfully deciphered a rare 6th-century palimpsest containing a lost commentary on the Vakya-Siddhanta. Using multi-spectral imaging and AI-assisted linguistic modeling, the team uncovered a series of complex mathematical verses that outline a previously unknown method for calculating lunar perigee fluctuations with a precision that rivals early modern European astronomy.

The manuscript, found in a remote monastic library in Nepal, provides significant evidence that ancient Indian astronomers used recursive algorithmic structures to model the non-linear motion of the moon. This research challenges the traditional timeline of mathematical development, suggesting that the Kerala School of Astronomy and Mathematics may have been building upon a much older tradition of sophisticated computational logic than previously recognized.

Original source: The Journal of Asian Studies