* In this sense Theon of Smyrna used it to describe a number which added to a polygonal number produces the next one of the same type.

* Theon of Smyrna

* Theon of Smyrna ( ca.

Theon Senior is named for Theon of Smyrna, a 1st-century Greek mathematician and philosopher.

Theon of Smyrna ( Θέωνος ὁ Σμυρναῖος ) ( fl.

Little is known about the life of Theon of Smyrna.

Ptolemy refers several times in his Almagest to a Theon who made observations at Alexandria, but it is uncertain whether he is referring to Theon of Smyrna.

* Lukas Richter :" Theon of Smyrna ".

de: Theon von Smyrna

Among later Middle Platonists there were Theon of Smyrna, who wrote a mathematical introduction to Plato, and Gaius ( 2nd century ) who was a teacher of Platonist philosophy.

The perfect numbers early on came to be treated as the measure of other numbers: those in which the sum of the divisors is greater than the number itself, as in 12, have — since as early as Theon of Smyrna, ca.

* Theon of Smyrna ( c. 70 – c.

Aelius Theon (; gen .: Αἰλίου Θέωνος ) was an Alexandrian sophist and author of a collection of preliminary exercises ( progymnasmata ) for the training of orators.

It is named for Theon of Alexandria, a 4th-century Greek astronomer and mathematician.

In an excerpt from the upcoming novel The Winds of Winter, Asha goes before Stannis and tries to offer a ransom for Theon, but Stannis insists that Theon must die for killing Eddard Stark's sons or all of the northmen will abandon Stannis.

After Robb receives news that his father was arrested for treason after the death of King Robert, Theon encourages him to go to war against the new King Joffrey, claiming that the Lannisters have already started the war by arresting his father.

Theon Greyjoy captures Winterfell shortly after, and Ramsay is released in exchange for a vow of service.

The lunar impact crater Theon Senior is named for him.

Theon quotes a poem by Alexander of Ephesus assigning specific pitches in the chromatic scale to each planet, an idea that would retain its popularity for a millennium thereafter.

* Theon, vocalist for Lovex

Theon wrote several commentaries on the works of mathematicians and philosophers of the time, including works on the philosophy of Plato.

The island's most famous site is the Sanctuary of the Great Gods, Greek Hieron ton Megalon Theon ; the most famous artifact of which is the 2. 5-metre marble statue of Nike, now known as the Winged Victory of Samothrace, dating from about 190 BC.

Theon (, gen .: Θέωνος ; ca.

While Theon shows Alvin the woods, the boys realize they both know about the legend of Shalmirane, a fortress mentioned in the earliest human history ; a fortress which defended against the invaders and signified the end of Man's conquest of space.

Ramsay and his men have left Winterfell to find Theon and Jeyne ; Stannis is confident that his superior military experience will grant him victory over Ramsay.

Here Theon affirms the spherical shape and large size of the Earth ; he also describes the occultations, transits, conjunctions, and eclipses.

Convention speakers have included Richard Lindzen, a professor of meteorology at MIT ; Roy Spencer, a research scientist and climatologist at the University of Alabama at Huntsville ; S. Fred Singer, who is a senior fellow of the Heartland Institute and was founding dean of the School of Environmental and Planetary Sciences at the University of Miami and founding director of the National Weather Satellite Service ; Harrison Schmitt, a geologist and former NASA astronaut and Apollo 17 moonwalker ; and Dr. John Theon, atmospheric scientist and former NASA supervisor.

In her Collected Works and occasional references in The Agenda, The Mother ( Mirra Alfassa ) describes Madame Theon as an extraordinary woman with great powers ; and refers to miraculous experiences at Tlemcen in Algeria, where she stayed on two extended visits to learn occultism under the tutelage of the Theons.

There is no mention of Euclid in the earliest remaining copies of the Elements, and most of the copies say they are " from the edition of Theon " or the " lectures of Theon ", while the text considered to be primary, held by the Vatican, mentions no author.

In the fourth century AD Theon of Alexandria produced an edition of Euclid which was so widely used that it became the only surviving source until François Peyrard's 1808 discovery at the Vatican of a manuscript not derived from Theon's.

The biographical tradition of the tenth century Byzantine ( Suda ) defines Theon as " the man from the Mouseion "; however, both the Library of Alexandria and the Mouseion may not have existed in the fourth century as Ammianus Marcellinus ( Historia 22. 15, 12-13 ), writing in 378 refers to the Serapeum Library as thing of the past, destroyed in the time of Julius Caesar.

He is to be distinguished from the Stoic Theon, who lived in the time of Augustus and also wrote on rhetoric.

Theon Senior is from the Eratosthenian period, which lasted from 3. 2 to 1. 1 billion years ago.

As her brother Theon became a political hostage and was taken from the Iron Islands, Asha was raised as Balon's heir despite the fact that custom dictates women cannot rule the Iron Islands.

An excerpt from the upcoming novel The Winds of Winter reveals that Theon and Jeyne continue to tell others that she is Arya because they fear Stannis will send her back to Winterfell if he learns the truth.

The death of his wife in 1908 was a huge blow to Theon, from which he never really recovered.

* Theon of Alexandria, Greek mathematician, dies at age 70 ( approximate ), having been helped in his work by his daughter Hypatia.

In the 4th century, Greek scholar Theon of Alexandria observed that " candlelight passing through a pinhole will create an illuminated spot on a screen that is directly in line with the aperture and the center of the candle.

* Theon of Alexandria, Greek mathematician, observes a solar eclipse ( June 16 ) and a lunar eclipse ( November 25 ).

* Ο Πόλεμος των Θεών ( O Polemos ton Theon / War of the Gods ) ( Greek )

The Suda ( a 10th century Byzantine Greek encyclopedia of known inaccuracy ) states that Pappus was of the same age as Theon of Alexandria, who flourished in the reign of Emperor Theodosius I ( 372 – 395 AD ).