Autolycus of Pitane
Autolycus of Pitane (c. 360 BC–c. 290 BC) was a Greek
astronomer, mathematician, and geographer.
Life and work
Autolycus was born in Pitane, a town of
Aeoliswithin Western Anatolia. Of his personal life nothing is known, although he was a contemporary of Aristotleand his works seem to have been completed in Athenswithin the years 335 BC and 300 BC. Euclidreferences some of Autolycus' work, and Autolycus is known to have taught Arcesilaus. Autolycus' surviving works include a book on spheres entitled "On the Moving Sphere" and another "On Risings and Settings" of celestial bodies. Autolycus' works were translated by Maurolycusin the sixteenth century.
"On the Moving Sphere" is believed to be the oldest mathematical treatise from ancient Greece that is completely preserved. All Greek mathematical works prior to Autolycus' "Spheres" are taken from later summaries, commentaries, or descriptions of the works.cite book|last=Boyer|authorlink=Carl Benjamin Boyer|title=|year=1991|chapter=The age of Plato and Aristotle|pages=97|quote=A few years after Dinostratus and Menaechmus there flourished a mathematician who has the distinction of having written the oldest surviving Greek mathematical treatise. We have described rather fully the work of earlier Hellenic mathematicians, but it must be borne in mind that the accounts have been based no on original work but on later summaries, commentaries, or description. Occasionally a commentator appears to be copying from an original work extant at the time, as when Simplicius in the sixth century of our era is describing the quadrature of lines by Hippocrates. But not until we come to Autolycus of Pitane, a contemporary of Aristotle, do we find a Greek author one of whose works has survived.] One reason for its survival is that it had originally been a part of a widely used collection called "Little Astronomy". In his "Sphere", Autolycus studied the characteristics and movement of a sphere. The work is simple and not exactly original since it consists of only elementary theorems on spheres that would be needed by astronomers, but its theorems are clearly enunciated and proved. Its prime significance, therefore, is that it indicates that by his day there was a thoroughly established textbook tradition in geometry that is today regarded as typical of classical Greek geometry. The theorem statement is clearly enunciated, a figure of the construction is given alongside the proof, and finally a concluding remark is made. Moreover, it gives indications of what theorems were well known in his day (around 320 BCE).cite book|last=Boyer|authorlink=Carl Benjamin Boyer|title=|year=1991|chapter=The age of Plato and Aristotle|pages=97-98|quote=One reason for the survival of little treatise, "On the Moving Sphere", is that it formed a part of a collection, known as the "Little Astronomy," widely used by ancient astronomers. "On the Moving Sphere" is not a profound and probably not a very original work, for it includes little beyond elementary theorems on the geometry of the sphere that would be needed in astronomy. Its chief significance lies in the fact that it indicates that Greek geometry evidently had reached the form that we regard as typical of the classical age. Theorems are clearly enunciated and proved. Moreover, the author uses without proof or indication of source other theorems that he regards as well known; we conclude, therefore, that there was in Greece in his day, about 320 B.C., a thoroughly established textbook tradition in geometry.] Two hundred years later Theodosius' wrote "Sphaerics", a book that is believed to have a common origin with "On the Moving Sphere" in some pre-Euclidean textbook, possibly written by
In astronomy, Autolycus studied the relationship between the rising and the setting of the celestial bodies in his treatise in two books entitled "On Risings and Settings". The second book is actually an expansion of his first book and of higher quality. He wrote that "any star which rises and sets always rises and sets at the same point in the horizon." Autolycus relied heavily on Eudoxus' astronomy and was a strong supporter of Eudoxus' theory of
homocentric spheres. The lunar craterAutolycus was named in his honour.
authorlink=Carl Benjamin Boyer
title=A History of Mathematics
publisher=John Wiley & Sons, Inc.
* cite encyclopedia
last = Huxley
first = G. L.
title = Autolycus of Pitane
Dictionary of Scientific Biography
volume = 1
pages = 338-339
publisher = Charles Scribner's Sons
location = New York
date = 1970
isbn = 0684101149
* [http://space.about.com/b/a/248924.htm About.com's "Autolycus of Pitane Biography"]
* [http://www.archive.org/details/autolycidesphaer00autouoft Autolycus "On The Moving Sphere" from the Million Books Project (Greek with Latin translation) ]
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