A huge forty rowed ship was built during the reign of Ptolemy IV in Egypt.

Some claim to find reference to the city in Ptolemy s work as the Metropolity (the 2nd century).

Ptolemy Keraunos (, died 279 BC) was the King of Macedon from 281 BC to 279 BC.

In mathematics, he had many important writings on trigonometry, which were developed from the writings of Ptolemy.

Eventually, Cleopatra acceded to a proposal from Ptolemy, but before her design could be realized, she was captured.

He arrived at the court of Lysimachus, the king of Thrace, Macedon, and part of Asia Minor.

He also depicted the Atlantic and Indian Oceans as open bodies of water, not land locked seas as Ptolemy had done.

Ptolemy ruled over Egypt, southern Syria (known as Coele Syria), and various territories on the southern coast of Asia Minor.

Al Khwārizmī corrected Ptolemy's gross overestimate for the length of the Mediterranean Sea from the Canary Islands to the eastern shores of the Mediterranean Ptolemy overestimated it at 63 degrees of longitude, while al Khwarizmi almost correctly estimated it at nearly 50 degrees of longitude.

So if we take an example Ptolemy had dozens of data points to support his theory that the planets would rotate around the Earth.

It was one of the 48 constellations listed by the 2nd century astronomer Ptolemy, and remains one of the 88 modern constellations.

One theory proposes that the lost state of Agisymba (mentioned by Ptolemy in the middle of the 2nd century AD) was the antecedent of the Kanem Empire.

His son Demetrius was defeated at the Battle of Gaza by Ptolemy in 312 BC, and after the battle, Seleucus made his way back to Babylonia.

Ptolemy modified the model of planetary motion by adding a point offset from the center of the planet's circular orbit about which the planet moves at a uniform rate of rotation.

Although Antigonus now concluded a compromise peace with Ptolemy, Lysimachus, and Cassander, he continued the war with Seleucus, attempting to recover control of the eastern reaches of the empire.

The city is also mentioned among the inland towns of the island both by Pliny and Ptolemy and though its name is not found in the Itineraries, it is again mentioned by the Geographer of Ravenna.

Ptolemy II (283 46 BC) is known to have built a large fleet of very large galleys with several experimental designs rowed by everything from 12 up to 40 rows of rowers, though most of these are considered to have been quite impractical.

(p. x) Gary Ferngren, (2002) Introduction, p. ix) ref The astronomer Carl Sagan, mentioned the dispute between the astronomical systems of Ptolemy (who thought that the sun and planets revolved around the earth) and Copernicus (who thought the earth and planets revolved around the sun).