[Pramāṇa](https://indike.org/pramana/) › [Studies](https://indike.org/pramana/ins) › [Science, technology and education](https://indike.org/pramana/ins.science) › [Census of the Exact Sciences in Sanskrit, Series A](https://indike.org/pramana/ins.science.pingree-1970) › v3.c12.1397 # Census of the Exact Sciences in Sanskrit, Series A v3.c12.1397 Census of the Exact Sciences in Sanskrit, Series A v3.c12.1397 - **Language:** English ### [v3.c12.1397](https://indike.org/pramana/ins.science.pingree-1970.v3.c12.1397) A Kachwāha (Kacchavaṃśa) Rājput, Jayasiṃha was born at Amber in 1686 to the Mahārāja Viṣṇusiṃha; he succeeded his father as Mahārāja in 1699 and ruled till his death on 2 October 1743. He founded the city of Jaipur in 1728 (see P. D. Pathak \[1963/64\]), and in the same year is said to have dedicated the Persian Zīj-i jadīd-i Muḥammad-Shāhī, probably largely written by Abū al-Khayr Khayr Allāh Khān, to the Mughal emperor Muḥammad Shāh (1719/1748), though the star-catalog is dated A.H. 1138 = A.D. 1725/1726 and the preface was written after 1734; see W. Hunter \[1797\] and C. A. Storey, Persian Literature, vol. 2, pt. 1, London 1958, pp. 93–94. He is best known for constructing the astronomical observatories at Benares, Delhi, Jaipur, Mathurā, and Ujjain; see R. Barker \[1777\]; J. L. Williams \[1793\]; S. B. Dikshit \[1896\] 353–355; A. Ff. Garrett and C. Guleri \[1902\]; S. Noti \[1911\]; G. R. Kaye \[1918a\] and \[1920a\]; M. F. Soonawala \[1940\] and \[A2. 1952\]; and A. P. Stone \[1958\]. He took an active part in Mughal politics (see J. Tod, Annals and Antiquities of Rajasthan, 3 vols., Oxford 1920, vol. 3, pp. 1341–1356; D. C. Sircar \[A3. 1936/37\]; S. Chandra \[A2. 1948\]; B. Das Gupta \[A2. 1956\]; M. L. Sharma \[A2. 1969\]; and H. C. Tikkimal \[A3. 1969\]; one of his most noteworthy political acts was the last performance of an aśvamedha in June/July 1742 (see P. K. Gode \[A3. 1937\] \[1937b\] \[1937/38b\] and \[A2. 1943\]; and V. S. Bhatnagar \[A3. 1960\]). Besides patronizing Kṛpārāma (fl. 1715) Jagannātha Samrāṭ (fl. ca. 1720/1740), Kevalarāma Pañcānana (fl. 1728/1762), and probably Nayanasukhopādhyāya (fl. ca. 1725/1730), Jayasiṃha was responsible for the writing of the following Sanskrit works on astronomy (see also S. B. Dikshit \[1896\] 292–295 and G. M. Moraes \[1951/52\]). - [Previous: v3.c12.1396](https://indike.org/pramana/ins.science.pingree-1970.v3.c12.1396) - [Next: v3.c12.1398](https://indike.org/pramana/ins.science.pingree-1970.v3.c12.1398) - [Up: v3.c12](https://indike.org/pramana/ins.science.pingree-1970.v3.c12) --- Source: [https://indike.org/pramana/ins.science.pingree-1970.v3.c12.1397](https://indike.org/pramana/ins.science.pingree-1970.v3.c12.1397) · Pramāṇa