Haridatta
Haridatta was an Indian mathematician and astronomer from Kerala who lived in the second half of the 7th century. He is credited with the Parahita system of astronomical calculations, which was widespread in Kerala and the neighboring state of Tamil Nadu and which simplified the older classical system of Aryabhata (in its Aryabhatiya) (hence the name Parahita, which meant suitable for everyone ). According to tradition, he and his colleagues presented their system in 683 AD at the Mamankam Festival in Thirunnavaya on the Bharathapuzha River , which takes place every 12 years .
In contrast to the cumbersome number system of Aryabhata , he introduced a system of number names that is easier to handle and learn (called katapayadi). He also shortened the calculation period for astronomical calculations (especially the planets) to 576 years, which also reduced the size of the numbers that had to be manipulated. He also specified the corresponding conversion algorithms for this change.
They set it out in two manuscripts, only one of which has survived, the Grahacaranibandhana (published by KV Sarma in 1954). The other work (Mahamarganibandhana) is lost.
literature
- KV Sarma Haridatta , in Helaine Selin (Ed.) Encyclopaedia of the History of Science, Technology, and Medicine in Non-Western Cultures , Kluwer 2008, pp. 1059f
- K. Chandra Hari Date of Haridatta: Promulgator of the Parahita System of Astronomy in Kerala , Indian Journal of History of Science, Volume 37, 2002, pp. 223-236
- KV Sarma A history of the Kerala school of Hindu astronomy , Hoshiapur 1972
Individual evidence
- ↑ Grahacaranibandhana: A Parahita manual by Haridatta , Madras: Kuppuswami Sastri Research Institute 1954
| personal data | |
|---|---|
| SURNAME | Haridatta |
| BRIEF DESCRIPTION | Indian mathematician and astronomer |
| DATE OF BIRTH | 7th century |
| DATE OF DEATH | 7th century or 8th century |