Parameshvara (mathematician)
Vatasseri Parameshvara (* around 1370 in Malabar ; † 1460 ) was an Indian mathematician, astrologer and astronomer. He is one of the founders of the Kerala School of Mathematicians and Astronomers in South India.
He was a Nambudiri - Brahmin (his surname was Vatasseri) and student of Madhava . His family came from Alathiyur on the banks of the Bharathapuzha near Tirur ( Malappuram (district) in Kerala). His son Damodara was also an astronomer and mathematician. He was the teacher of Nilakantha Somayaji , who also knew Parameshvara personally.
At least 25 manuscripts on astronomy are known from him. Among other things, he wrote commentaries on the works of Bhaskara I. and Aryabhata I.
He was an observing astronomer who, based on precise observations of eclipses over 55 years, suggested corrections to the parameters in the astronomical theories (especially of Aryabhata I) then widespread in India.
He gave a formula for the radius of the circumference in the chordal quadrilateral (usually attributed to Simon L'Huilier in 1782) and used an average theorem for the interpolation of the sine.
literature
- David Pingree in Dictionary of Scientific Biography
- KV Sarma A History of the Kerala School of Hindu Astronomy , Hoshiarpur, 1972
Web links
- John J. O'Connor, Edmund F. Robertson : Parameshvara (mathematician). In: MacTutor History of Mathematics archive .
Individual evidence
- ↑ Radha Charan Gupta A mean-value-type formula for inverse interpolation of the sine , Ganita 30 (1-2) (1979), 78--82
| personal data | |
|---|---|
| SURNAME | Parameshvara |
| BRIEF DESCRIPTION | Indian mathematician and astronomer |
| DATE OF BIRTH | around 1370 |
| PLACE OF BIRTH | Kerala |
| DATE OF DEATH | 1460 |
| Place of death | India |