This article is about Theodorus the mathematician from Cyrene. For the atheist also from Cyrene, see Theodorus the Atheist.
Theodorus of Cyrene (Greek: Θεόδωρος ὁ Κυρηναῖος, translit. Theódōros ho Kyrēnaîos) was an ancient Greek mathematician who lived during the 5th century BC. The only first-hand accounts of him that survive are in three of Plato's dialogues: the Theaetetus, the Sophist, and the Statesman. In the former dialogue, he posits a mathematical construction now known as the Spiral of Theodorus.
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TheodorusofCyrene (Greek: Θεόδωρος ὁ Κυρηναῖος, translit. Theódōros ho Kyrēnaîos) was an ancient Greek mathematician who lived during the 5th century...
composed of right triangles, placed edge-to-edge. It was named after TheodorusofCyrene. The spiral is started with an isosceles right triangle, with each...
Theodorus "the Atheist" (Greek: Θεόδωρος ὁ ἄθεος, translit. Theódōros ho átheos; c. 340 – c. 250 BCE), ofCyrene, was a Greek philosopher of the Cyrenaic...
It is also known as Theodorus' constant, after TheodorusofCyrene, who proved its irrationality. As of December 2013[update], its numerical value in decimal...
{2}}} , the square root of 2. Plato in his Theaetetus, describes how TheodorusofCyrene (c. 400 BC) proved the irrationality of 3 {\displaystyle {\sqrt...
constant – Jožef Stefan and Ludwig Boltzmann Theodorus' constant (√3 ≅ ±1.732050807568877...) – TheodorusofCyrene Tupper's number – Jeff Tupper Viswanath's...
Libya TheodorusofCyrene (c. 5th century BC), mathematician Ahmed K. Elmagarmid (born 1954), computer scientist Hegesias ofCyrene Antipater ofCyrene Anniceris...
University of Alexandria, regarding Archeometry research and contextual sectors. Number of Greeks according to the Census in Egypt. Greeks ofCyrene (the Cyrenaica...
exhaustion is the first step in the creation of calculus. TheodorusofCyrene proved the irrationality of the surds of whole numbers up to 17, but stopped there...
Pythagoras Serenus of Antinouplis Simplicius of Cilicia Sporus of Nicaea Thales Theaetetus Theano TheodorusofCyrene Theodosius of Bithynia Theon of Alexandria...
creatures of "absurd forms" such as Centaurs and the Chimera could not easily be explained. In the ancient skeptic philosophical tradition ofTheodorusof Cyrene...
square root of 2 was the first such number to be proved irrational. TheodorusofCyrene proved the irrationality of the square roots of non-square natural...
and also calculates the square root of 2 correct to five decimal places. 5th c. BC – Greece, TheodorusofCyrene 5th century – Greece, Antiphon the Sophist...
hedonist Greek school of philosophy founded in the 4th century BCE, supposedly by Aristippus ofCyrene, although many of the principles of the school are believed...
Stilpo, TheodorusofCyrene, Aristotle, and Theophrastus were accused of impiety under this decree. Socrates was found guilty of the charge of introducing...
dates of which place his birth less than two decades prior. In the Theaetetus, his character is a student of the mathematician TheodorusofCyrene and interested...
were Theodorus the Atheist and Anniceris. While no credible historic source has survived on Arete's teachings, the tenets of the School ofCyrene which...
Aristippus ofCyrene (/ˌærəˈstɪpəs/; Ancient Greek: Ἀρίστιππος ὁ Κυρηναῖος; c. 435 – c. 356 BCE) was a hedonistic Greek philosopher and the founder of the Cyrenaic...
Ἡγησίας; fl. 290 BC) ofCyrene was a Cyrenaic philosopher. He argued that eudaimonia (happiness) is impossible to achieve, and that the goal of life should be...