Visual Representations and Intertextualities in Second Millennium Sanskrit Eclipse Reckoning
摘要
The Parvadvayasādhana (“Computation of the two syzygies”) of Mallāri (fl. late sixteenth century) is a short Sanskrit treatise dedicated to the computation of lunar and solar eclipses. With an epoch date of 1588, this composition is preserved in at least 25 manuscripts (Pingree 1970–1994, 4:365 and 5: 284–85), indicating its widespread popularity. As was conventional in the Sanskrit astral sciences, Mallāri divides his exposition of eclipse reckoning into three distinct parts. The initial section, comprising 14 verses, covers lunar eclipses (vidhu-grahaḥ), and the following section, solar eclipses (ravi-grahaḥ) contains 11 verses. The final section, the shortest of the three, sets out procedures pertaining to the graphical representation of eclipses (parilekha) in only five verses.