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Ptolemy

Definitions

  • WordNet 3.6
    • n Ptolemy an ancient dynasty of Macedonian kings who ruled Egypt from 323 BC to 30 BC; founded by Ptolemy I and ended with Cleopatra
    • n Ptolemy Alexandrian astronomer (of the 2nd century) who proposed a geocentric system of astronomy that was undisputed until the late Renaissance
    • ***

Usage

In literature:

And these are mentioned by Ptolemy.
"The Ethnology of the British Islands" by Robert Gordon Latham
It has often indeed been denied that the Sinae of Ptolemy really represented the Chinese.
"Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 2" by Various
Ptolemy Soter, the founder of this line of kings, was not only a patron of science, but likewise an author.
"History of the Intellectual Development of Europe, Volume I (of 2)" by John William Draper
Manetho, it will be recalled, was the Egyptian who wrote the history of Egypt in Greek in the time of the Ptolemies.
"Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 3" by Various
Asoko, a Hindu emperor, sent an embassy to Ptolemy Philadelphos.
"The Lords of the Ghostland" by Edgar Saltus
Deinon, also an historian, was possibly a native of Egypt, or at least spent a considerable time at the court of Ptolemy Lagus.
"Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 4" by Various
Perhaps you will become a king because of having followed Hannibal, as did Ptolemy following Alexander.
"Sónnica" by Vicente Blasco Ibáñez
He left the kingdom to Cleopatra, in partnership with Ptolemy, her brother.
"A Guest at the Ludlow and Other Stories" by Edgar Wilson (Bill) Nye
In Alexandria, in Egypt, there was an immense library, founded by the Ptolemies.
"Bible Myths and their Parallels in other Religions" by T. W. Doane
Ptolemy is said to be the first writer who mentions Argentoratum, the ancient Strasburg.
"The Cathedrals and Churches of the Rhine" by Francis Miltoun
Ptolemy has been much commended by some ancient writers for his liberality in allowing the architect to inscribe his name instead of his own.
"The Scrap Book, Volume 1, No. 6" by Various
She married first her brother Ptolemy Philometer, and later, a second brother Ptolemy Physcon.
"Oriental Women" by Edward Bagby Pollard
Tragedy and the dramatic art continued to be favoured by the later Ptolemies; and about 100 B.C.
"Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 6" by Various
On the opposite coast lies Madagascar, mentioned long ago by Ptolemy.
"The Complete Club Book for Women" by Caroline French Benton
Ptolemy catalogued 13 stars in this constellation, Tycho n, and Hevelius 51.
"Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6" by Various
It was built on the site of an earlier structure entirely in the time of the Ptolemies.
"Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 10" by Various
His Greek texts include Aristotle and Ptolemy.
"The Century of Columbus" by James J. Walsh
A HISTORY OF THE EGYPT OF THE PTOLEMIES.
"Here and Hereafter" by Barry Pain
On the death of Alexander the Great the city became the residence of the Ptolemies.
"The World and Its People: Book VII" by Anna B. Badlam
He returned to Alexandria at the summons of Ptolemy III.
"Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 7" by Various
***

In news:

Here we are then, in Egypt, the land of the Pharoahs, the land of the Ptolemies, the kingdom of Cleopatra (as they say in the grand style).
48 BC – Upon landing in Egypt, Roman general and politician Pompey the Great is murdered on the orders of King Ptolemy of Egypt (More info).
The Last Days of Ptolemy Grey by Walter Mosley.
The Last Days of Ptolemy Gray.
If you know Walter Mosley for his series of Easy Rawlins stories, already an established classic of the mystery genre, be prepared to be very surprised by his latest novel, The Last Days of Ptolemy Grey.
Walter Mosley's "The Last Days of Ptolemy Grey," reviewed by Carolyn See.
THE LAST DAYS OF PTOLEMY GREY.
'The Last Days of Ptolemy Grey' review: Facing death, but finding a mission.
"The Last Days of Ptolemy Grey, " By Walter Mosley.
The Last Days of Ptolemy Grey Walter Mosley Riverhead Books, 288 pp.
' The Last Days of Ptolemy Grey'.
' The Last Days of Ptolemy Grey' review: Facing death, but finding a mission.
" The Last Days of Ptolemy Grey, " By Walter Mosley.
The Last Days of Ptolemy Grey Walter Mosley Riverhead Books, 288 pp.
The Last Days of Ptolemy Grey by Walter Mosley.
***

In science:

Penner: The universal Ptolemy group and its completions.
Moduli spaces of convex projective structures on surfaces
Ptolemy Soter sponsored also Euclid in writing the Elements.
Eratosthenes and Pliny, Greek geometry and Roman follies
There is a corresponding statement on the level of lambda lengths of these three arcs, see [FT, Lemma 7.2]; these conventions are compatible with both the Ptolemy relations and the exchange relations among cluster variables [FT, Theorem 7.5].
Positivity for cluster algebras from surfaces
The exchange relation corresponding to a flip in an ideal triangulation is called a generalized Ptolemy relation.
Positivity for cluster algebras from surfaces
There are also generalized Ptolemy relations for tagged triangulations, see [FT, Definition 7.4].
Positivity for cluster algebras from surfaces
This is exactly the corresponding exchange relation (“Ptolemy relation”) in A.
Positivity for cluster algebras from surfaces
Note that there are four ways of changing the taggings around p and q, and for each we get a Ptolemy relation.
Positivity for cluster algebras from surfaces
We now want to interpret each of the terms xα(p) xδ, xαxδ(p), xγ (q) xβ, and xβ (q) xγ as the left-hand-side of a Ptolemy relation.
Positivity for cluster algebras from surfaces
Similarly, letting η be the arc between v and w homotopic to the concatenation of β and γ, so that ρ′ and η are opposite sides of a bigon with the interior point q, we get the following Ptolemy relations.
Positivity for cluster algebras from surfaces
The text that is used for comparison is the Almagest, the twelfth century Arabic version of Ptolemy’s astronomical text of which the original Greek text is lost.
Aryabhata's Mathematics
The exchange relation corresponding to a flip in a triangulation is called a generalized Ptolemy relation.
Bases for cluster algebras from surfaces
In particular, he compared the relative brightness of stars described by Al Sufi, Ptolemy (ca. 90- ca. 168) and Hipparchus (ca. 190 BC – ca. 120 BC) with their present day brightness, concluding that some stars had brightened and others had faded.
John Ellard Gore: of immensity and minuteness
Kepler argued for a distance three times this value but it was not before the end of the seventeenth century that it was found that Ptolemy’s estimate was wrong by a factor of about seventeen.
Early Theories on the Distance to the Sun
We first note that the idea that the sun is roughly 500 or so earth diameters away from us is much more ancient that Ptolemy.
Early Theories on the Distance to the Sun
It is not known why the apparent diameter of the Moon did not seem to worry Ptolemy.
Quasi periodic motions from Hipparchus to Kolmogorov
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