Knowledge (XXG)

Devācārya

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which deals with almost every aspect of planetary astronomy generally discussed in other Indian texts on astronomy. This work is important in the study of history of astronomy in India as it sheds valuable light on the methods used by the astronomers of South India, in the seventh century CE, in
189:, the second and third chapters respectively deal with lunar and solar eclipses and the fourth chapter with gnomonic shadow. The remaining four chapters are devoted to discussions on time of moonrise, visibilty of the Moon, positions of planets and planetary conjunctions. 185:, in eight chapters, covers all the topics related to astronomy that are generally discussed in other Indian texts on astronomy. In the first chapter, the author discusses the computation of the true positions of the Sun and the Moon and the elements of 68:. He has based his rule on the assumption that the precession of the equinoxes is oscillatory and its rate is about 47 seconds per annum. The modern value of the rate is 50.3 seconds per annum. The rule appears in stanza 36 Chapter 1 of 47:
was a great devotee of Viṣṇu, Ŝiva and Brahma. That he flourished during the second half of the seventh century CE is inferred from the fact the epoch (the date from which the planetary computations are to be commenced) specified in
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can be described as an astronomer who was a follower of Āryabhaṭa I' school of astronomy. At the same time he had no hesitation in adopting and adapting concepts from
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There is one significant point that needs special mention: Devācārya is the first astronomer to give a rule for finding the
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scheme for representing numbers which is the signature method of Kerala astronomers for representing numbers.
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edited with an English translation by K. S. Shukla is available in the Internet Archive at the link
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The method used for the computation of solar eclipses is a unique method peculiar to Kerala.
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who flourished during the second half of 7th century CE. He is the author of a
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Facets of Indian Astronomy (A collection of articles by K. V. Sarma)
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appear in the works of later astronomers and mathematicians of the
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Shanti Swarup Bhatnagar Prize recipients in Mathematical Science
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their astronomical computations. No personal information about
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There are several evidences which conclusively establish that
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is known except that his father's name was Gojanma and that
309:. Tiruppati: Rashtriya Sanskrit University. pp. 149–150 96:
were discovered from Kerala and they are all written in the
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List of astronomers and mathematicians of the Kerala school
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Infinite series expansions for the trigonometric functions
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Ramanujan Institute for Advanced Study in Mathematics
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Parthasarathy (probabilist) 92:All the available manuscripts of 52:is the first day of the year 611 2514:Science and technology in Kerala 1076:Chennai Mathematical Institute 445:Melpathur Narayana Bhattathiri 76:Devācārya, a Kerala astronomer 1: 241:Kripa Shankar Shukla (1979). 193:Full text of Devācārya's work 2320:Laghuvivṛti (commentary on 1524:Rājamṛgāṅka (astronomy book) 1267:Prasanta Chandra Mahalanobis 1066:Indian Statistical Institute 244:The Karanaratna of Devacarya 2442:Mahodayapuram (Kodungallur) 2231:Śaṅkara Varma of Kaṭattanāṭ 1826: 1421: 1086:Indian Institute of Science 1071:Bhaskaracharya Pratishthana 949:A. A. Krishnaswamy Ayyangar 914:Shankar Balakrishna Dikshit 841:Hindu–Arabic numeral system 2530: 2462:(Nilakantha Somayaji, etc) 2432:(Govinda Bhattathiri, etc) 2391:Madhava's correction terms 1212:Subrahmanyan Chandrasekhar 581:Subrahmanyan Chandrasekhar 2450:(Madhava of Sangamagrama) 2426:(Azhvanchery Thamprakkal) 2216:Śaṅkara of Mahiṣamaṅgalam 1297:Venkatraman Radhakrishnan 591:Veeravalli S. Varadarajan 60:A noteworthy contribution 34:text on astronomy titled 2468:(Putumana Somayaji, etc) 2206:Parameśvara of Vațaśśeri 1007:Henry Thomas Colebrooke 596:S. R. Srinivasa Varadhan 2186:Madhava of Sangamagrama 1978:Ancient Greek astronomy 1262:Madhava of Sangamagrama 480:Mādhava of Saṅgamagrāma 66:precession of equinoxes 2415:Places associated with 2330:Mahābhāskarīya Bhāshya 266:Roger Billard (1986). 2417:members of the school 2327:Madhyamanayanaprakara 2302:Jyotiśśāstra-saṃgraha 2294:Jātaka-sāara-saṃgraha 2291:Grahacāraṇinibandhana 2261:Aryabhatiya-bhashya ( 2151:Dāmodara of Vațaśreņi 2141:Azhvāñceri Taṃprākkaḷ 1983:Hellenistic astronomy 1766:Deferent and epicycle 1490:Brāhmasphuṭasiddhānta 1322:Jai Singh II of Amber 691:Brāhmasphuṭasiddhānta 2466:Sivapuram (Thrissur) 2401:Madhava's sine table 1973:Babylonian astronomy 1207:Radhagobinda Chandra 967:T. A. Saraswati Amma 678:Bakhshali manuscript 646:Kannan Soundararajan 303:K. V. Sarma (2009). 192: 2263:Nīlakaņțha Sōmayāji 2196:Nīlakaņțha Sōmayāji 2161:Govinda Bhattathiri 1821:Hindu units of time 1544:Vasishtha Siddhanta 1518:Paitamaha Siddhanta 1412:Shatapatha Brahmana 1327:Nilakantha Somayaji 1043:Islamic mathematics 1002:Walter Eugene Clark 796:Vasishtha Siddhanta 768:Siddhānta Shiromani 747:Paitamaha Siddhanta 626:Tilak Raj Prabhakar 571:Satyendra Nath Bose 566:Srinivasa Ramanujan 520:Nilakantha Somayaji 146:Nīlakaṇṭha Somayājī 2504:Astronomy in India 2499:Indian mathematics 2181:Kochukrishnan Asan 2124:and mathematicians 1998:European astronomy 1736:Cardinal direction 1665:Equatorial sundial 1504:Pancha-Siddhantika 1202:Sandip Chakrabarti 535:Gangesha Upadhyaya 356:Indian mathematics 2481: 2480: 2444:(Sankaranarayana) 2386:Kaṭapayādi system 2381:Drigganita system 2268:Candrachayaganita 2221:Putumana Somayāji 2081: 2080: 1993:Chinese astronomy 1988:Islamic astronomy 1751:Celestial spheres 1741:Celestial equator 1511:Paulisa Siddhanta 1405:Aitareya Brahmana 1312:Jagannatha Samrat 1292:Achyuta Pisharati 1114: 1113: 920:Sudhakara Dvivedi 740:Paulisa Siddhanta 659: 658: 515:Jagannatha Samrat 510:Achyuta Pisharati 16:Indian astronomer 2521: 2438:(Sankara Varman) 2343:Sidhhantadarpana 2108: 2101: 2094: 2085: 1831: 1801:Geoheliocentrism 1771:Earth's rotation 1746:Celestial sphere 1680:Mural instrument 1630:Armillary sphere 1574:Vedanga Jyotisha 1530:Romaka Siddhanta 1426: 1357:Shankara Variyar 1148:Indian astronomy 1141: 1134: 1127: 1118: 754:Romaka Siddhanta 636:Akshay Venkatesh 606:M. S. Narasimhan 576:P.C. Mahalanobis 369: 349: 342: 335: 326: 319: 318: 316: 314: 300: 289: 287: 285: 283: 263: 257: 256: 254: 252: 238: 132:Quotations from 120:Śākābda Samskāra 2529: 2528: 2524: 2523: 2522: 2520: 2519: 2518: 2509:Hindu astronomy 2484: 2483: 2482: 2477: 2416: 2410: 2406:Parahita system 2369:Concepts/Topics 2364: 2250: 2226:Śankara Vāriyar 2211:Śaṅkaranārāyaṇa 2136:Acyuta Piṣāraṭi 2131:(Complete list) 2123: 2117: 2112: 2082: 2077: 2008: 2002: 1961: 1918: 1887:Spherical Earth 1714: 1660:Equatorial ring 1640:Celestial globe 1618: 1537:Surya Siddhanta 1474:Makarandasarini 1376: 1372:Pathani Samanta 1317:Bapudeva Sastri 1282:Jayant Narlikar 1232:M. K. Das Gupta 1150: 1145: 1115: 1110: 1058: 1052: 1016: 990: 961:C. T. Rajagopal 908:Bapudeva Sastri 900: 894: 856: 836:Brahmi numerals 828: 822: 782:Surya Siddhanta 655: 631:Manjul Bhargava 554: 413: 358: 353: 323: 322: 312: 310: 302: 301: 292: 281: 279: 265: 264: 260: 250: 248: 240: 239: 228: 223: 213: 195: 180: 78: 62: 17: 12: 11: 5: 2527: 2525: 2517: 2516: 2511: 2506: 2501: 2496: 2486: 2485: 2479: 2478: 2476: 2475: 2469: 2463: 2457: 2451: 2445: 2439: 2433: 2427: 2420: 2418: 2412: 2411: 2409: 2408: 2403: 2398: 2396:Madhava series 2393: 2388: 2383: 2378: 2372: 2370: 2366: 2365: 2363: 2362: 2357: 2352: 2350:Tantrasamgraha 2347: 2344: 2341: 2336: 2331: 2328: 2325: 2322:Tantrasamgraha 2318: 2316:Kriyakramakari 2313: 2311:Karaṇapaddhati 2308: 2303: 2300: 2295: 2292: 2289: 2286: 2283: 2282:Gaṇitayuktayah 2280: 2277: 2272: 2269: 2266: 2258: 2256: 2252: 2251: 2249: 2248: 2243: 2238: 2233: 2228: 2223: 2218: 2213: 2208: 2203: 2198: 2193: 2188: 2183: 2178: 2173: 2168: 2163: 2158: 2153: 2148: 2143: 2138: 2133: 2127: 2125: 2119: 2118: 2113: 2111: 2110: 2103: 2096: 2088: 2079: 2078: 2076: 2075: 2070: 2065: 2060: 2055: 2050: 2045: 2040: 2035: 2030: 2025: 2020: 2014: 2012: 2010:Vedic calendar 2004: 2003: 2001: 2000: 1995: 1990: 1985: 1980: 1975: 1969: 1967: 1963: 1962: 1960: 1959: 1954: 1953: 1952: 1947: 1942: 1937: 1926: 1924: 1920: 1919: 1917: 1916: 1911: 1904: 1899: 1894: 1889: 1884: 1879: 1874: 1869: 1864: 1859: 1854: 1849: 1844: 1837: 1832: 1823: 1818: 1813: 1808: 1803: 1798: 1793: 1788: 1786:Elliptic orbit 1783: 1778: 1773: 1768: 1763: 1761:Circular orbit 1758: 1756:Center of mass 1753: 1748: 1743: 1738: 1733: 1728: 1722: 1720: 1716: 1715: 1713: 1712: 1707: 1702: 1697: 1692: 1687: 1682: 1677: 1672: 1667: 1662: 1657: 1652: 1647: 1642: 1637: 1632: 1626: 1624: 1620: 1619: 1617: 1616: 1609: 1602: 1601: 1600: 1593: 1577: 1570: 1563: 1556: 1553:Tantrasangraha 1549: 1548: 1547: 1540: 1533: 1526: 1521: 1514: 1507: 1500: 1497:Maha-Siddhanta 1493: 1477: 1470: 1463: 1460:Khandakhadyaka 1456: 1449: 1442: 1435: 1428: 1417: 1416: 1415: 1408: 1392: 1384: 1382: 1378: 1377: 1375: 1374: 1369: 1364: 1359: 1354: 1349: 1344: 1339: 1334: 1329: 1324: 1319: 1314: 1309: 1304: 1299: 1294: 1289: 1284: 1279: 1274: 1269: 1264: 1259: 1254: 1249: 1244: 1239: 1234: 1229: 1227:Gautama Siddha 1224: 1219: 1217:Amil Kumar Das 1214: 1209: 1204: 1199: 1194: 1189: 1184: 1179: 1174: 1169: 1164: 1158: 1156: 1152: 1151: 1146: 1144: 1143: 1136: 1129: 1121: 1112: 1111: 1109: 1108: 1103: 1098: 1093: 1088: 1083: 1078: 1073: 1068: 1062: 1060: 1054: 1053: 1051: 1050: 1045: 1040: 1035: 1030: 1024: 1022: 1018: 1017: 1015: 1014: 1009: 1004: 998: 996: 992: 991: 989: 988: 982: 976: 970: 964: 958: 952: 946: 941: 935: 932:P. C. Sengupta 929: 923: 917: 911: 904: 902: 896: 895: 893: 892: 870: 864: 862: 858: 857: 855: 854: 849: 843: 838: 832: 830: 824: 823: 821: 820: 813: 806: 799: 792: 789:Tantrasamgraha 785: 778: 771: 764: 757: 750: 743: 736: 729: 722: 715: 712:Karanapaddhati 708: 701: 698:Ganita Kaumudi 694: 687: 680: 675: 667: 665: 661: 660: 657: 656: 654: 653: 648: 643: 638: 633: 628: 623: 618: 616:Harish-Chandra 613: 611:C. S. Seshadri 608: 603: 598: 593: 588: 583: 578: 573: 568: 562: 560: 556: 555: 553: 552: 547: 545:Sankara Variar 542: 537: 532: 527: 522: 517: 512: 507: 502: 497: 492: 487: 482: 477: 472: 467: 462: 457: 452: 447: 442: 437: 432: 427: 421: 419: 415: 414: 412: 411: 406: 401: 396: 391: 386: 381: 375: 373: 366: 364:Mathematicians 360: 359: 354: 352: 351: 344: 337: 329: 321: 320: 290: 258: 225: 224: 222: 219: 212: 209: 208: 207: 194: 191: 179: 173: 168:Sūryasiddhānta 162:Khaṇḍakhādyaka 150: 149: 130: 127: 113: 101: 77: 74: 61: 58: 15: 13: 10: 9: 6: 4: 3: 2: 2526: 2515: 2512: 2510: 2507: 2505: 2502: 2500: 2497: 2495: 2492: 2491: 2489: 2473: 2470: 2467: 2464: 2461: 2460:Thrikkandiyur 2458: 2455: 2452: 2449: 2446: 2443: 2440: 2437: 2434: 2431: 2428: 2425: 2422: 2421: 2419: 2413: 2407: 2404: 2402: 2399: 2397: 2394: 2392: 2389: 2387: 2384: 2382: 2379: 2377: 2376:Chandravakyas 2374: 2373: 2371: 2367: 2361: 2358: 2356: 2353: 2351: 2348: 2345: 2342: 2340: 2337: 2335: 2332: 2329: 2326: 2323: 2319: 2317: 2314: 2312: 2309: 2307: 2304: 2301: 2299: 2298:Jyotirmimamsa 2296: 2293: 2290: 2287: 2284: 2281: 2278: 2276: 2273: 2270: 2267: 2264: 2260: 2259: 2257: 2253: 2247: 2244: 2242: 2239: 2237: 2236:Udayadivākara 2234: 2232: 2229: 2227: 2224: 2222: 2219: 2217: 2214: 2212: 2209: 2207: 2204: 2202: 2201:Nīlakaṇṭha II 2199: 2197: 2194: 2192: 2189: 2187: 2184: 2182: 2179: 2177: 2174: 2172: 2169: 2167: 2166:Govindasvāmin 2164: 2162: 2159: 2157: 2154: 2152: 2149: 2147: 2144: 2142: 2139: 2137: 2134: 2132: 2129: 2128: 2126: 2120: 2116: 2109: 2104: 2102: 2097: 2095: 2090: 2089: 2086: 2074: 2071: 2069: 2066: 2064: 2061: 2059: 2056: 2054: 2051: 2049: 2046: 2044: 2041: 2039: 2036: 2034: 2031: 2029: 2026: 2024: 2021: 2019: 2016: 2015: 2013: 2011: 2007:Months of the 2005: 1999: 1996: 1994: 1991: 1989: 1986: 1984: 1981: 1979: 1976: 1974: 1971: 1970: 1968: 1966:Other regions 1964: 1958: 1955: 1951: 1948: 1946: 1943: 1941: 1938: 1936: 1933: 1932: 1931: 1930:Jantar Mantar 1928: 1927: 1925: 1921: 1915: 1914:Zodiacal sign 1912: 1910: 1909: 1905: 1903: 1900: 1898: 1895: 1893: 1890: 1888: 1885: 1883: 1880: 1878: 1875: 1873: 1870: 1868: 1865: 1863: 1860: 1858: 1855: 1853: 1850: 1848: 1845: 1843: 1842: 1838: 1836: 1835:Kali ahargaṇa 1833: 1830: 1829: 1824: 1822: 1819: 1817: 1816:Heliocentrism 1814: 1812: 1809: 1807: 1804: 1802: 1799: 1797: 1794: 1792: 1789: 1787: 1784: 1782: 1779: 1777: 1774: 1772: 1769: 1767: 1764: 1762: 1759: 1757: 1754: 1752: 1749: 1747: 1744: 1742: 1739: 1737: 1734: 1732: 1729: 1727: 1724: 1723: 1721: 1717: 1711: 1708: 1706: 1703: 1701: 1698: 1696: 1693: 1691: 1688: 1686: 1683: 1681: 1678: 1676: 1673: 1671: 1668: 1666: 1663: 1661: 1658: 1656: 1653: 1651: 1648: 1646: 1643: 1641: 1638: 1636: 1633: 1631: 1628: 1627: 1625: 1621: 1615: 1614: 1610: 1608: 1607: 1603: 1599: 1598: 1594: 1592: 1591: 1587: 1586: 1585: 1584: 1583: 1578: 1576: 1575: 1571: 1569: 1568: 1564: 1562: 1561: 1557: 1555: 1554: 1550: 1546: 1545: 1541: 1539: 1538: 1534: 1532: 1531: 1527: 1525: 1522: 1520: 1519: 1515: 1513: 1512: 1508: 1506: 1505: 1501: 1499: 1498: 1494: 1492: 1491: 1487: 1486: 1485: 1484: 1483: 1478: 1476: 1475: 1471: 1469: 1468: 1464: 1462: 1461: 1457: 1455: 1454: 1450: 1448: 1447: 1446:Shulba Sutras 1443: 1441: 1440: 1439:Jyotirmimamsa 1436: 1434: 1433: 1432:Ganitagannadi 1429: 1427: 1425: 1424: 1423:Bṛhat Saṃhitā 1418: 1414: 1413: 1409: 1407: 1406: 1402: 1401: 1400: 1399: 1398: 1393: 1391: 1390: 1386: 1385: 1383: 1379: 1373: 1370: 1368: 1365: 1363: 1360: 1358: 1355: 1353: 1350: 1348: 1345: 1343: 1342:Govind Swarup 1340: 1338: 1337:Mahendra Suri 1335: 1333: 1330: 1328: 1325: 1323: 1320: 1318: 1315: 1313: 1310: 1308: 1307:Megh Nad Saha 1305: 1303: 1300: 1298: 1295: 1293: 1290: 1288: 1285: 1283: 1280: 1278: 1275: 1273: 1270: 1268: 1265: 1263: 1260: 1258: 1255: 1253: 1250: 1248: 1245: 1243: 1240: 1238: 1235: 1233: 1230: 1228: 1225: 1223: 1220: 1218: 1215: 1213: 1210: 1208: 1205: 1203: 1200: 1198: 1195: 1193: 1190: 1188: 1185: 1183: 1180: 1178: 1175: 1173: 1170: 1168: 1165: 1163: 1160: 1159: 1157: 1153: 1149: 1142: 1137: 1135: 1130: 1128: 1123: 1122: 1119: 1107: 1104: 1102: 1099: 1097: 1094: 1092: 1089: 1087: 1084: 1082: 1079: 1077: 1074: 1072: 1069: 1067: 1064: 1063: 1061: 1055: 1049: 1046: 1044: 1041: 1039: 1036: 1034: 1031: 1029: 1026: 1025: 1023: 1021:Other regions 1019: 1013: 1012:David Pingree 1010: 1008: 1005: 1003: 1000: 999: 997: 993: 986: 983: 980: 977: 974: 971: 968: 965: 962: 959: 956: 953: 950: 947: 945: 942: 939: 936: 933: 930: 927: 926:M. Rangacarya 924: 921: 918: 915: 912: 909: 906: 905: 903: 899:Historians of 897: 890: 886: 882: 878: 874: 873:Jantar Mantar 871: 869: 866: 865: 863: 859: 853: 850: 848: 844: 842: 839: 837: 834: 833: 831: 825: 819: 818: 814: 812: 811: 807: 805: 804: 800: 798: 797: 793: 791: 790: 786: 784: 783: 779: 777: 776: 772: 770: 769: 765: 763: 762: 758: 756: 755: 751: 749: 748: 744: 742: 741: 737: 735: 734: 730: 728: 727: 723: 721: 720: 716: 714: 713: 709: 707: 706: 702: 700: 699: 695: 693: 692: 688: 686: 685: 681: 679: 676: 674: 673: 669: 668: 666: 662: 652: 649: 647: 644: 642: 639: 637: 634: 632: 629: 627: 624: 622: 619: 617: 614: 612: 609: 607: 604: 602: 599: 597: 594: 592: 589: 587: 584: 582: 579: 577: 574: 572: 569: 567: 564: 563: 561: 557: 551: 548: 546: 543: 541: 538: 536: 533: 531: 528: 526: 523: 521: 518: 516: 513: 511: 508: 506: 503: 501: 498: 496: 493: 491: 490:Mahendra Sūri 488: 486: 483: 481: 478: 476: 473: 471: 468: 466: 463: 461: 458: 456: 453: 451: 448: 446: 443: 441: 438: 436: 433: 431: 428: 426: 423: 422: 420: 416: 410: 407: 405: 402: 400: 397: 395: 392: 390: 387: 385: 382: 380: 377: 376: 374: 370: 367: 365: 361: 357: 350: 345: 343: 338: 336: 331: 330: 327: 308: 307: 299: 297: 295: 291: 277: 273: 269: 262: 259: 246: 245: 237: 235: 233: 231: 227: 220: 218: 217: 210: 205: 201: 198:Full text of 197: 196: 190: 188: 184: 178: 174: 172: 170: 169: 164: 163: 158: 154: 147: 143: 139: 135: 131: 128: 125: 121: 117: 114: 111: 110: 105: 102: 99: 95: 91: 90: 89: 87: 83: 75: 73: 71: 67: 59: 57: 55: 51: 46: 42: 37: 33: 29: 25: 21: 2346:Spuṭanirṇaya 2339:Sadratnamālā 2306:Kanakkusāraṃ 2246:Vidyamadhava 2155: 2058:Margashirsha 1906: 1839: 1776:Eccentricity 1611: 1606:Yavanajataka 1604: 1595: 1588: 1580: 1579: 1572: 1565: 1558: 1551: 1542: 1535: 1528: 1516: 1509: 1502: 1495: 1488: 1480: 1479: 1472: 1465: 1458: 1451: 1444: 1437: 1430: 1419: 1410: 1403: 1395: 1394: 1387: 1352:Varahamihira 1287:Parameshvara 1172:Aryabhata II 1059:institutions 979:K. S. Shukla 951:(1892– 1953) 817:Yavanajataka 815: 808: 801: 794: 787: 780: 775:Śulba Sūtras 773: 766: 761:Sadratnamala 759: 752: 745: 738: 731: 724: 717: 710: 705:Kanakkusaram 703: 696: 689: 682: 670: 540:Varāhamihira 505:Parameshvara 460:Govindasvāmi 430:Āryabhaṭa II 311:. Retrieved 305: 280:. Retrieved 275: 271: 261: 249:. Retrieved 243: 214: 199: 186: 182: 181: 176: 175:Contents of 166: 160: 152: 151: 133: 119: 115: 107: 103: 93: 84:hailed from 81: 79: 69: 63: 49: 44: 40: 35: 31: 19: 18: 2474:(Haridatta) 2436:Kadathanadu 2176:Jyeṣṭhadeva 2122:Astronomers 1796:Geocentrism 1705:Water clock 1650:Cross-staff 1623:Instruments 1590:Atharvaveda 1567:Vākyakaraṇa 1389:Aryabhatiya 1367:Yajnavalkya 1302:J. J. Rawal 1237:Jyesthadeva 1197:Brahmagupta 1187:Bhāskara II 1177:Vainu Bappu 1167:Aryabhata I 1155:Astronomers 995:Translators 987:(1919–2005) 985:K. V. Sarma 981:(1918–2007) 975:(1918–1992) 969:(1918–2000) 963:(1903–1978) 957:(1901–1954) 955:A. N. Singh 940:(1888–1958) 938:B. B. Datta 934:(1876–1962) 928:(1861–1916) 922:(1855–1910) 916:(1853–1898) 910:(1821–1900) 901:mathematics 845:Symbol for 829:innovations 726:Lokavibhaga 672:Aryabhatiya 470:Jyeṣṭhadeva 455:Brahmagupta 440:Bhāskara II 425:Āryabhaṭa I 409:Yajnavalkya 288:(in French) 200:Karaņaratna 183:Karaṇaratna 177:Karaṇaratna 157:Brahmagupta 142:Paramesvara 134:Karaņaratna 94:Karaņaratna 70:Karaṇaratna 50:Karaņaratna 36:Karaņaratna 2488:Categories 2472:Tirunavaya 2360:Yuktibhāṣā 2334:Pañcabodha 2275:Drigganita 2271:Dasādhyāyi 2241:Vararuci I 2146:Citrabhānu 2043:Bhadrapada 1877:Precession 1852:Manvantara 1726:Axial tilt 1710:Yantraraja 1700:Triquetrum 1482:Siddhantas 1453:Panchangam 1242:Kamalakara 1222:P. Devadas 1192:Baudhayana 1182:Bhāskara I 944:T. Hayashi 827:Pioneering 810:Yuktibhāṣā 733:Pātīgaṇita 684:Bijaganita 641:Ravi Vakil 495:Munishvara 475:Kamalakara 450:Brahmadeva 435:Bhāskara I 384:Baudhayana 221:References 140:, namely, 126:or 521 CE. 109:kaṭapayādi 2454:Peruvanam 2430:Alathiyur 2424:Athavanad 2355:Venvaroha 2279:Dṛkkaraṇa 2255:Treatises 2171:Haridatta 2156:Devācārya 2038:Shraavana 2033:Aashaadha 1940:New Delhi 1867:Nityayoga 1862:Nakshatra 1857:Moonlight 1635:Astrolabe 1397:Brahmanas 1247:Katyayana 1162:Apastamba 973:S. N. Sen 881:New Delhi 803:Veṇvāroha 664:Treatises 465:Halayudha 418:Classical 389:Katyayana 379:Apastamba 153:Devācārya 118:uses the 116:Devācārya 106:uses the 104:Devācārya 98:Malayalam 88:, India: 82:Devācārya 45:Devācārya 41:Devācārya 20:Devācārya 2448:Kudallur 2288:Golasara 2285:Golavada 2073:Phalguna 2023:Vaisakha 1950:Varanasi 1892:Sunlight 1872:Parallax 1781:Ecliptic 1719:Concepts 1685:Quadrant 1467:Mahādevī 1362:Vasistha 1272:Mahavira 889:Varanasi 847:zero (0) 719:Līlāvatī 586:C.R. Rao 550:Virasena 530:Sridhara 500:Narayana 485:Mahāvīra 211:See also 187:Pañjaṅga 124:Saka Era 54:Saka Era 2028:Jyeshta 2018:Chaitra 1923:Centres 1828:Jyotiṣa 1811:Gravity 1731:Azimuth 1695:Sundial 1690:Sextant 1655:Dioptra 1645:Compass 1597:Rigveda 1332:Sripati 1252:Lagadha 1028:Babylon 861:Centres 525:Śrīpati 404:Pingala 372:Ancient 313:29 July 282:29 July 278:(21–35) 251:29 July 100:script. 2068:Maagha 2063:Pausha 2053:Kartik 2048:Ashvin 1945:Ujjain 1935:Jaipur 1847:Karana 1791:Equant 1675:Gnomon 1347:Utpala 1277:Manava 1057:Modern 1048:Europe 1038:Greece 885:Ujjain 877:Jaipur 559:Modern 399:Pāṇini 394:Manava 86:Kerala 32:karaņa 24:Kerala 1897:Tithi 1841:Kalpa 1806:Globe 1670:Globe 1582:Vedas 1381:Works 1257:Lalla 1033:China 28:India 1908:Yuga 1902:Vāra 1882:Ritu 1106:TIFR 315:2024 284:2024 253:2024 204:HERE 165:and 144:and 1613:Zij 159:'s 2490:: 887:, 883:, 879:, 293:^ 276:75 274:. 270:. 229:^ 171:. 72:. 26:, 2324:) 2265:) 2107:e 2100:t 2093:v 1140:e 1133:t 1126:v 891:) 875:( 348:e 341:t 334:v 317:. 286:. 255:. 206:. 148:.

Index

Kerala
India
Saka Era
precession of equinoxes
Kerala
Malayalam
kaṭapayādi
Saka Era
Kerala school of astronomy and mathematics
Paramesvara
Nīlakaṇṭha Somayājī
Brahmagupta
Khaṇḍakhādyaka
Sūryasiddhānta
HERE
List of astronomers and mathematicians of the Kerala school




The Karanaratna of Devacarya
"Investigation du présent : Karanaratna"



Facets of Indian Astronomy (A collection of articles by K. V. Sarma)
v
t
e
Indian mathematics

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