2186:
2173:
384:
188:
Since the 18th century, the classicists have added to the name of
Sosigenes, to distinguish it from others, the origin: "of Alexandria". However, no ancient source calls him that, or indicates that he was an Alexandrian. The misattribution may be from the fusion of two pieces of news about the reform
132:... There were three main schools, the Chaldaean, the Egyptian, and the Greek; and to these a fourth was added in our country by Caesar during his dictatorship, who with the assistance of the learned astronomer Sosigenes brought the separate years back into conformity with the course of the sun.
201:
that the reform was based on "Egyptian teachings" together with the news from Pliny that
Sosigenes was one of the experts consulted by Caesar for the adaptation of the calendar.
942:
434:
2046:
404:
2124:
1427:
963:
705:
935:
909:
1971:
1701:
427:
1666:
399:
2225:
2034:
1646:
1437:
899:
695:
2210:
2101:
928:
451:
288:
420:
176:
The introduction of the Julian year occurred in 46 BC. This particular year lasted 445 days in Rome to correct the erroneous old
2220:
2070:
2003:
1636:
1516:
832:
2139:
1896:
1784:
959:
1779:
1848:
1475:
1291:
1266:
2010:
1981:
1341:
1196:
629:
160:; it has a similar orbit, but is by no means similar in magnitude or power. It travels in a lower circle, with a
2215:
2144:
1421:
1878:
2106:
2082:
1956:
1891:
1832:
1769:
1759:
1495:
1414:
1276:
1186:
1066:
624:
443:
124:
98:
2129:
2077:
1976:
1804:
1754:
1739:
1734:
1505:
1306:
1241:
1231:
1181:
771:
644:
579:
169:
2177:
2029:
1814:
1691:
1614:
1562:
1364:
1271:
1121:
807:
736:
474:
217:
2185:
1873:
2154:
2094:
2058:
1901:
1724:
1671:
1641:
1631:
1540:
1403:
1296:
1211:
1166:
1146:
991:
976:
878:
619:
569:
489:
464:
2134:
2053:
2041:
2022:
1986:
1906:
1824:
1809:
1799:
1749:
1744:
1686:
1555:
1447:
1376:
1311:
1301:
1201:
1171:
1111:
1086:
1011:
1001:
986:
649:
554:
504:
479:
2190:
2149:
2089:
2017:
1883:
1676:
1651:
1619:
1216:
1161:
1126:
1021:
883:
797:
237:. None of those events is present in the historical record, and they were invented for the film.
164:
nine days quicker, shining sometimes before sunrise and sometimes after sunset, but according to
1858:
1457:
276:
1863:
1774:
1624:
1550:
1523:
1286:
1106:
1096:
1031:
951:
792:
639:
544:
499:
284:
2065:
1936:
1853:
1609:
1597:
1545:
1281:
904:
857:
827:
817:
766:
741:
153:
137:
1706:
1696:
1590:
1316:
852:
787:
756:
654:
584:
119:
107:
93:
369:
204:
The oldest mention of
Sosigenes of Alexandria appears in the work of Le Fèvre de Morsan
1966:
1961:
1789:
1681:
1661:
1489:
1046:
1016:
715:
594:
529:
509:
177:
89:
76:
2204:
1926:
1794:
1764:
1585:
1393:
1336:
837:
822:
802:
395:
390:
234:
103:
189:
of the Roman calendar at the initiative of Julius Caesar, namely: the indication by
1868:
1656:
1331:
1091:
1081:
685:
534:
1482:
1370:
1076:
1061:
524:
469:
226:
212:
194:
1468:
1387:
1326:
1321:
1261:
1246:
1191:
1176:
1131:
1071:
1056:
1036:
1006:
971:
842:
659:
604:
564:
494:
1221:
1206:
1156:
1051:
1041:
1026:
996:
920:
746:
599:
589:
574:
519:
514:
459:
222:
198:
225:'s tutor/adviser and later her envoy to Rome. He is ultimately murdered in
412:
330:
1358:
1136:
981:
847:
675:
539:
230:
1931:
1256:
1251:
1151:
1141:
1116:
751:
614:
609:
559:
549:
246:
165:
86:
1226:
1101:
862:
812:
761:
634:
484:
320:
I. Loeb
Classical Library 330. Translated by H. Rackman, 1938, p.193.
190:
157:
1602:
1580:
1236:
389:
This article incorporates text from a publication now in the
161:
149:
47:
Consulted by Julius Caesar for the design of the Julian calendar
924:
416:
80:
265:
Pliny the Elder
Naturalis Historia XVIII, 210-212:Sosigene
221:. This portrayal is heavily fictionalized: he serves as
180:, and is thus considered "the longest year in history".
2117:
1995:
1945:
1919:
1841:
1823:
1722:
1715:
1571:
1533:
1350:
958:
892:
871:
780:
729:
668:
450:
58:
43:
35:
21:
92:) was an Ancient Greek astronomer. According to
146:
130:
936:
428:
283:. Vol. II, M–Z. Springer. p. 1074.
8:
408:(11th ed.). Cambridge University Press.
1949:
1719:
943:
929:
921:
435:
421:
413:
18:
279:. In Hockey, Thomas; et al. (eds.).
140:, which is described by Pliny in book 2,
128:. Sosigenes appears in Book 18, 210-212:
106:consulted him while he was designing the
258:
136:Sosigenes is credited with work on the
1972:Latin translations of the 12th century
359:Macrobius, Saturnalia 1.14.3, 1.16.39.
281:Biographical dictionary of astronomers
1702:Straightedge and compass construction
118:Little is known about him apart from
7:
1667:Incircle and excircles of a triangle
206:Des Moeurs et des Usages des Romains
316:Book II, 36-41 in Pliny the Elder,
14:
2184:
2171:
382:
2004:A History of Greek Mathematics
1517:The Quadrature of the Parabola
1:
833:Inferior and superior planets
1785:Intersecting secants theorem
1780:Intersecting chords theorem
1647:Doctrine of proportionality
331:The Longest Year in History
275:Dialetis, Dimitris (2007).
211:Sosigenes was portrayed by
2242:
2226:1st-century BC astronomers
1476:On the Sphere and Cylinder
1429:On the Sizes and Distances
910:Medieval Islamic astronomy
707:On the Sizes and Distances
170:never more than 22 degrees
81:
2211:Ancient Greek astronomers
2178:Ancient Greece portal
2167:
1982:Philosophy of mathematics
1952:
1897:Ptolemy's table of chords
952:Ancient Greek mathematics
900:Medieval European science
630:Sosigenes the Peripatetic
307:18.211, trans. H. Rackham
277:"Sosigenes of Alexandria"
66:
51:
28:
1849:Aristarchus's inequality
1422:On Conoids and Spheroids
29:
16:Ancient Greek astronomer
1957:Ancient Greek astronomy
1770:Inscribed angle theorem
1760:Greek geometric algebra
1415:Measurement of a Circle
625:Sosigenes of Alexandria
444:Ancient Greek astronomy
405:Encyclopædia Britannica
341:Appian, Civil war 2.154
2221:Roman-era Alexandrians
2191:Mathematics portal
1977:Non-Euclidean geometry
1932:Mouseion of Alexandria
1805:Tangent-secant theorem
1755:Geometric mean theorem
1740:Exterior angle theorem
1735:Angle bisector theorem
1439:On Sizes and Distances
697:On Sizes and Distances
174:
134:
1879:Pappus's area theorem
1815:Theorem of the gnomon
1692:Quadratrix of Hippias
1615:Circles of Apollonius
1563:Problem of Apollonius
1541:Constructible numbers
1365:Archimedes Palimpsest
808:Deferent and epicycle
737:Antikythera mechanism
208:, published in 1739.
2095:prehistoric counting
1892:Ptolemy's inequality
1833:Apollonius's theorem
1672:Method of exhaustion
1642:Diophantine equation
1632:Circumscribed circle
1449:On the Moving Sphere
879:Babylonian astronomy
570:Hippocrates of Chios
2181: •
1987:Neusis construction
1907:Spiral of Theodorus
1800:Pythagorean theorem
1745:Euclidean algorithm
1687:Lune of Hippocrates
1556:Squaring the circle
1312:Theon of Alexandria
987:Aristaeus the Elder
650:Theon of Alexandria
1874:Menelaus's theorem
1864:Irrational numbers
1677:Parallel postulate
1652:Euclidean geometry
1620:Apollonian circles
1162:Isidore of Miletus
884:Egyptian astronomy
798:Circle of latitude
215:in the 1963 movie
184:Cultural depiction
172:away from the sun.
2198:
2197:
2163:
2162:
1915:
1914:
1902:Ptolemy's theorem
1775:Intercept theorem
1625:Apollonian gasket
1551:Doubling the cube
1524:The Sand Reckoner
918:
917:
793:Celestial spheres
350:Cassius Dio 43.26
235:war against Egypt
233:, commencing his
156:, by some called
148:The star next to
70:
69:
53:Scientific career
2233:
2189:
2188:
2176:
2175:
2174:
1950:
1937:Platonic Academy
1884:Problem II.8 of
1854:Crossbar theorem
1810:Thales's theorem
1750:Euclid's theorem
1720:
1637:Commensurability
1598:Axiomatic system
1546:Angle trisection
1511:
1501:
1463:
1453:
1443:
1433:
1409:
1399:
1382:
945:
938:
931:
922:
905:Indian astronomy
858:Sublunary sphere
828:Hipparchic cycle
767:Mural instrument
742:Armillary sphere
721:
711:
701:
691:
681:
437:
430:
423:
414:
409:
388:
386:
385:
374:
373:
370:"Kiwi Hellenist"
366:
360:
357:
351:
348:
342:
339:
333:
327:
321:
314:
308:
301:
295:
294:
272:
266:
263:
138:orbit of Mercury
84:
83:
19:
2241:
2240:
2236:
2235:
2234:
2232:
2231:
2230:
2216:Julian calendar
2201:
2200:
2199:
2194:
2183:
2172:
2170:
2159:
2125:Arabian/Islamic
2113:
2102:numeral systems
1991:
1941:
1911:
1859:Heron's formula
1837:
1819:
1711:
1707:Triangle center
1697:Regular polygon
1574:and definitions
1573:
1567:
1529:
1509:
1499:
1461:
1451:
1441:
1431:
1407:
1397:
1380:
1346:
1317:Theon of Smyrna
962:
954:
949:
919:
914:
888:
867:
853:Spherical Earth
788:Callippic cycle
776:
757:Equatorial ring
725:
719:
709:
699:
689:
679:
664:
655:Theon of Smyrna
446:
441:
398:, ed. (1911). "
394:
383:
381:
378:
377:
368:
367:
363:
358:
354:
349:
345:
340:
336:
328:
324:
318:Natural History
315:
311:
305:Natural History
302:
298:
291:
274:
273:
269:
264:
260:
255:
243:
186:
142:Natural History
125:Natural History
116:
108:Julian calendar
99:Natural History
94:Pliny the Elder
31:
24:
17:
12:
11:
5:
2239:
2237:
2229:
2228:
2223:
2218:
2213:
2203:
2202:
2196:
2195:
2168:
2165:
2164:
2161:
2160:
2158:
2157:
2152:
2147:
2142:
2137:
2132:
2127:
2121:
2119:
2118:Other cultures
2115:
2114:
2112:
2111:
2110:
2109:
2099:
2098:
2097:
2087:
2086:
2085:
2075:
2074:
2073:
2063:
2062:
2061:
2051:
2050:
2049:
2039:
2038:
2037:
2027:
2026:
2025:
2015:
2014:
2013:
1999:
1997:
1993:
1992:
1990:
1989:
1984:
1979:
1974:
1969:
1967:Greek numerals
1964:
1962:Attic numerals
1959:
1953:
1947:
1943:
1942:
1940:
1939:
1934:
1929:
1923:
1921:
1917:
1916:
1913:
1912:
1910:
1909:
1904:
1899:
1894:
1889:
1881:
1876:
1871:
1866:
1861:
1856:
1851:
1845:
1843:
1839:
1838:
1836:
1835:
1829:
1827:
1821:
1820:
1818:
1817:
1812:
1807:
1802:
1797:
1792:
1790:Law of cosines
1787:
1782:
1777:
1772:
1767:
1762:
1757:
1752:
1747:
1742:
1737:
1731:
1729:
1717:
1713:
1712:
1710:
1709:
1704:
1699:
1694:
1689:
1684:
1682:Platonic solid
1679:
1674:
1669:
1664:
1662:Greek numerals
1659:
1654:
1649:
1644:
1639:
1634:
1629:
1628:
1627:
1622:
1612:
1607:
1606:
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1588:
1577:
1575:
1569:
1568:
1566:
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1560:
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1558:
1553:
1548:
1537:
1535:
1531:
1530:
1528:
1527:
1520:
1513:
1503:
1493:
1490:Planisphaerium
1486:
1479:
1472:
1465:
1455:
1445:
1435:
1425:
1418:
1411:
1401:
1391:
1384:
1374:
1367:
1362:
1354:
1352:
1348:
1347:
1345:
1344:
1339:
1334:
1329:
1324:
1319:
1314:
1309:
1304:
1299:
1294:
1289:
1284:
1279:
1274:
1269:
1264:
1259:
1254:
1249:
1244:
1239:
1234:
1229:
1224:
1219:
1214:
1209:
1204:
1199:
1194:
1189:
1184:
1179:
1174:
1169:
1164:
1159:
1154:
1149:
1144:
1139:
1134:
1129:
1124:
1119:
1114:
1109:
1104:
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1089:
1084:
1079:
1074:
1069:
1064:
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1054:
1049:
1044:
1039:
1034:
1029:
1024:
1019:
1014:
1009:
1004:
999:
994:
989:
984:
979:
974:
968:
966:
960:Mathematicians
956:
955:
950:
948:
947:
940:
933:
925:
916:
915:
913:
912:
907:
902:
896:
894:
890:
889:
887:
886:
881:
875:
873:
869:
868:
866:
865:
860:
855:
850:
845:
840:
835:
830:
825:
820:
815:
810:
805:
800:
795:
790:
784:
782:
778:
777:
775:
774:
769:
764:
759:
754:
749:
744:
739:
733:
731:
727:
726:
724:
723:
717:On the Heavens
713:
703:
693:
690:(Eratosthenes)
683:
672:
670:
666:
665:
663:
662:
657:
652:
647:
642:
637:
632:
627:
622:
617:
612:
607:
602:
597:
595:Philip of Opus
592:
587:
582:
577:
572:
567:
562:
557:
552:
547:
542:
537:
532:
527:
522:
517:
512:
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502:
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492:
487:
482:
477:
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467:
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417:
411:
410:
396:Chisholm, Hugh
376:
375:
361:
352:
343:
334:
322:
309:
296:
289:
267:
257:
256:
254:
251:
250:
249:
242:
239:
185:
182:
178:Roman calendar
168:and Sosigenes
115:
112:
90:1st century BC
68:
67:
64:
63:
60:
56:
55:
49:
48:
45:
44:Known for
41:
40:
37:
33:
32:
26:
25:
22:
15:
13:
10:
9:
6:
4:
3:
2:
2238:
2227:
2224:
2222:
2219:
2217:
2214:
2212:
2209:
2208:
2206:
2193:
2192:
2187:
2180:
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2166:
2156:
2153:
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2148:
2146:
2143:
2141:
2138:
2136:
2133:
2131:
2128:
2126:
2123:
2122:
2120:
2116:
2108:
2105:
2104:
2103:
2100:
2096:
2093:
2092:
2091:
2088:
2084:
2081:
2080:
2079:
2076:
2072:
2069:
2068:
2067:
2064:
2060:
2057:
2056:
2055:
2052:
2048:
2045:
2044:
2043:
2040:
2036:
2033:
2032:
2031:
2028:
2024:
2021:
2020:
2019:
2016:
2012:
2008:
2007:
2006:
2005:
2001:
2000:
1998:
1994:
1988:
1985:
1983:
1980:
1978:
1975:
1973:
1970:
1968:
1965:
1963:
1960:
1958:
1955:
1954:
1951:
1948:
1944:
1938:
1935:
1933:
1930:
1928:
1925:
1924:
1922:
1918:
1908:
1905:
1903:
1900:
1898:
1895:
1893:
1890:
1888:
1887:
1882:
1880:
1877:
1875:
1872:
1870:
1867:
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1862:
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1857:
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1831:
1830:
1828:
1826:
1822:
1816:
1813:
1811:
1808:
1806:
1803:
1801:
1798:
1796:
1795:Pons asinorum
1793:
1791:
1788:
1786:
1783:
1781:
1778:
1776:
1773:
1771:
1768:
1766:
1765:Hinge theorem
1763:
1761:
1758:
1756:
1753:
1751:
1748:
1746:
1743:
1741:
1738:
1736:
1733:
1732:
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1728:
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1604:
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1600:
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1584:
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1582:
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1578:
1576:
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1564:
1561:
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1552:
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1521:
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1518:
1514:
1512:
1508:
1504:
1502:
1498:
1494:
1492:
1491:
1487:
1485:
1484:
1480:
1478:
1477:
1473:
1471:
1470:
1466:
1464:
1460:
1456:
1454:
1450:
1446:
1444:
1440:
1436:
1434:
1432:(Aristarchus)
1430:
1426:
1424:
1423:
1419:
1417:
1416:
1412:
1410:
1406:
1402:
1400:
1396:
1392:
1390:
1389:
1385:
1383:
1379:
1375:
1373:
1372:
1368:
1366:
1363:
1361:
1360:
1356:
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2169:
2011:Thomas Heath
2002:
1885:
1869:Law of sines
1725:
1657:Golden ratio
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1500:(Theodosius)
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1442:(Hipparchus)
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1420:
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1404:
1394:
1386:
1381:(Apollonius)
1377:
1369:
1357:
1332:Zeno of Elea
1092:Eratosthenes
1082:Dionysodorus
716:
706:
700:(Hipparchus)
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687:Catasterismi
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535:Eratosthenes
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102:18.210–212,
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52:
2078:mathematics
1886:Arithmetica
1483:Ostomachion
1452:(Autolycus)
1371:Arithmetica
1147:Hippocrates
1077:Dinostratus
1062:Dicaearchus
992:Aristarchus
818:Geocentrism
730:Instruments
720:(Aristotle)
525:Cleostratus
490:Aristarchus
470:Anaximander
452:Astronomers
213:Hume Cronyn
195:Cassius Dio
36:Nationality
2205:Categories
2130:Babylonian
2030:arithmetic
1996:History of
1825:Apollonius
1510:(Menelaus)
1469:On Spirals
1388:Catoptrics
1327:Xenocrates
1322:Thymaridas
1307:Theodosius
1292:Theaetetus
1272:Simplicius
1262:Pythagoras
1247:Posidonius
1232:Philonides
1192:Nicomachus
1187:Metrodorus
1177:Menaechmus
1132:Hipparchus
1122:Heliodorus
1072:Diophantus
1057:Democritus
1037:Chrysippus
1007:Archimedes
1002:Apollonius
972:Anaxagoras
964:(timeline)
893:Influenced
872:Influences
843:Octaeteris
772:Triquetrum
660:Timocharis
645:Theodosius
605:Posidonius
565:Hipparchus
555:Heraclides
495:Aristyllus
480:Apollonius
475:Andronicus
329:Lienhard,
253:References
162:revolution
1591:Inscribed
1351:Treatises
1342:Zenodorus
1302:Theodorus
1277:Sosigenes
1222:Philolaus
1207:Oenopides
1202:Nicoteles
1197:Nicomedes
1157:Hypsicles
1052:Ctesibius
1042:Cleomedes
1027:Callippus
1012:Autolycus
997:Aristotle
977:Anthemius
747:Astrolabe
680:(Ptolemy)
600:Philolaus
590:Oenopides
575:Hypsicles
520:Cleomedes
515:Callippus
505:Autolycus
460:Aglaonice
400:Sosigenes
227:the Forum
223:Cleopatra
218:Cleopatra
199:Macrobius
114:Biography
82:Σωσιγένης
73:Sosigenes
62:Astronomy
30:Σωσιγένης
23:Sosigenes
2155:Japanese
2140:Egyptian
2083:timeline
2071:timeline
2059:timeline
2054:geometry
2047:timeline
2042:calculus
2035:timeline
2023:timeline
1726:Elements
1572:Concepts
1534:Problems
1507:Spherics
1497:Spherics
1462:(Euclid)
1408:(Euclid)
1405:Elements
1398:(Euclid)
1359:Almagest
1267:Serenus
1242:Porphyry
1182:Menelaus
1137:Hippasus
1112:Eutocius
1087:Domninus
982:Archytas
848:Solstice
781:Concepts
677:Almagest
620:Seleucus
580:Menelaus
540:Euctemon
241:See also
231:Octavian
2135:Chinese
2090:numbers
2018:algebra
1946:Related
1920:Centers
1716:Results
1586:Central
1257:Ptolemy
1252:Proclus
1217:Perseus
1172:Marinus
1152:Hypatia
1142:Hippias
1117:Geminus
1107:Eudoxus
1097:Eudemus
1067:Diocles
752:Dioptra
615:Pytheas
610:Ptolemy
560:Hicetas
550:Geminus
545:Eudoxus
500:Attalus
465:Agrippa
393::
303:Pliny,
247:Acoreus
166:Cidenas
154:Mercury
2150:Indian
1927:Cyrene
1459:Optics
1378:Conics
1297:Theano
1287:Thales
1282:Sporus
1227:Philon
1212:Pappus
1102:Euclid
1032:Carpus
1022:Bryson
863:Zodiac
813:Equant
762:Gnomon
640:Thales
635:Strabo
485:Aratus
387:
287:
191:Appian
158:Apollo
59:Fields
2145:Incan
2066:logic
1842:Other
1610:Chord
1603:Axiom
1581:Angle
1237:Plato
1127:Heron
1047:Conon
669:Works
585:Meton
530:Conon
150:Venus
120:Pliny
77:Greek
39:Greek
2107:list
1395:Data
1167:Leon
1017:Bion
510:Bion
285:ISBN
197:and
2009:by
1723:In
402:".
229:by
152:is
122:'s
96:'s
87:fl.
85:) (
2207::
193:,
144::
110:.
79::
944:e
937:t
930:v
436:e
429:t
422:v
372:.
293:.
75:(
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