Vijayanandi

Vijayanandi or Vijayananda (c. 940, Benares (now Varanasi), India – c. 1010, India) was an Indian mathematician and astronomer who made contributions to trigonometry.

Son of Jayananda, the only known information is that he wrote a work called the Karanatilaka known only from an Arabic translation, Ghurrat al-Zijat , by al-Biruni.¹ There was however another astronomer named Vijayanandi who was referred to by Varahamihira (fl. c. 550) his Pañcasiddhāntikā (XVII, 62) for methods of computing the longitudes of Jupiter and Saturn.²

The Karanatilaka includes notes on the units of time, the longitudes of the sun and moon, computation of daylength, eclipse and other such topics.³

References

Khan, M.S. (1987). "An Examination of Al-Bīrūnī's Knowledge of Indian Astronomy". International Astronomical Union Colloquium. 91: 139–144. doi:10.1017/S0252921100105962. ISSN 0252-9211.
O'Connor, John J.; Robertson, Edmund F., "Vijayanandi", MacTutor History of Mathematics Archive, University of St Andrews
Sarton, George; Siegel, Frances (1936). "Forty-Sixth Critical Bibliography of the History and Philosophy of Science and of the History of Civilization (To End of February 1936,--With Special Reference to China and Japan)". Isis. 25 (2): 522–613. doi:10.1086/347115. ISSN 0021-1753.

[1] Khan, M.S. (1987). "An Examination of Al-Bīrūnī's Knowledge of Indian Astronomy". International Astronomical Union Colloquium. 91: 139–144. doi:10.1017/S0252921100105962. ISSN 0252-9211.

[2] O'Connor, John J.; Robertson, Edmund F., "Vijayanandi", MacTutor History of Mathematics Archive, University of St Andrews

[3] Sarton, George; Siegel, Frances (1936). "Forty-Sixth Critical Bibliography of the History and Philosophy of Science and of the History of Civilization (To End of February 1936,--With Special Reference to China and Japan)". Isis. 25 (2): 522–613. doi:10.1086/347115. ISSN 0021-1753.

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