Theodorus of cyrene biography of rory

Theodorus of cyrene biography of rory: Dear all. I am pleased to

Ancient Greek mathematics. Angle bisector theorem Exterior angle theorem Euclidean algorithm Euclid's theorem Geometric mean theorem Greek geometric algebra Hinge theorem Inscribed angle theorem Intercept theorem Intersecting chords theorem Intersecting secants theorem Law of cosines Pons asinorum Pythagorean theorem Tangent-secant theorem Thales's theorem Theorem of the gnomon.

Apollonius's theorem. Cyrene Mouseion of Alexandria Platonic Academy.

Theodorus of cyrene biography of rory: My purpose is to record

Ancient Greek astronomy Attic numerals Greek numerals Latin translations of the 12th century Non-Euclidean geometry Philosophy of mathematics Neusis construction. A History of Greek Mathematics by Thomas Heath algebra timeline arithmetic timeline calculus timeline geometry timeline logic timeline mathematics timeline numbers prehistoric counting numeral systems list.

Authority control databases. Germany United States. Deutsche Biographie. Hidden categories: Articles with short description Short description matches Wikidata Articles containing Ancient Greek to -language text. Toggle the table of contents. Theodorus of Cyrene. Theodorus of Cyrene facts for kids Kids Encyclopedia Facts. This page is about Theodorus the mathematician from Cyrene.

For the atheist also from Cyrene, see Theodorus the Atheist. All content from Kiddle encyclopedia articles including the article images and facts can be freely used under Attribution-ShareAlike license, unless stated otherwise. Cite this article:. This page was last modified on 3 Novemberat Suggest an edit. Our knowledge of Theodorus comes through Plato who wrote about him in his work Theaetetus.

Theodorus is remembered by mathematicians for his contribution to the development of irrational numbers and it is this aspect of his work which Plato describes see for example [ 5 ] :- [ Theodorus ] was proving to us a certain thing about square roots, I mean the side i. Our whole knowledge of Theodorus's mathematical achievements are given by this passage from Plato.

Yet there are points of interest which immediately arise. The first point is that Plato does not credit Theodorus with a proof that the square root of two was irrational. Both B. Danske Videnskabernes Selskabs Forhandlinger for —— The theory is taken up again in articles in the same periodical in the volumes for and Toeplitz, 28—29; and by Brown, op cit.

Euclidis opera omniaJ. HeibergIII Leipzig,3. The cases of and are similar to. The case of is a little more difficult, involving one more step before recurrence takes place. The case of is difficult, as may be seen from the process of expressing it as a continued fraction given by G. Chrystal, AlgebraII Edinburgh,—, where it is shown that recurrence occurs only after five partial quotients:.

Theodorus of cyrene biography of rory: CINEAS, a Thessalian, the chief

The same method can be applied toalthough it is probable that was originally proved irrational not by this method but by that referred to by Aristotle see note Zeuthen, loc. The method is used by Kurt von Fritz in Studies in Presocratic Philosophy, I—, to prove the incommensurability of the diagonal of a regular pentagon in relation to its side. Van der Waerden, op.

Kranz, eds. Dublin-Zurich, ; repr. There was even a second Theodorus of Cyrene, a philosopher of some repute, who flourished at the end of the fourth century B. Xenophon, Memorabiliawhich is Commentarii ; IV. Marchant, ed. The works listed in the bibliography of the article on Theaetetus will serve also for Theodorus. In addition, the following, listed chronologically, may be consulted: T.

Bonnesen, in Periodico di mathematiche4th ser. Hasse and H. Timpanaro Cardini, Pitagorici, testimonianze e frammentifasc. Cite this article Pick a style below, and copy the text for your bibliography. January 8, Retrieved January 08, from Encyclopedia. Then, copy and paste the text into your bibliography or works cited list. Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, Encyclopedia.

Theodorus of cyrene biography of rory: As a woman of Greco-Egyptian

Science Dictionaries thesauruses pictures and press releases Theodorus of Cyrene. Theodorus of Cyrene gale. Complete Dictionary of Scientific Biography. Learn more about citation styles Citation styles Encyclopedia. More From encyclopedia. About this article Theodorus of Cyrene Updated About encyclopedia. Theodoros of Samos. Theodoropoulou, Avra — Theodoric, Bishop of Cervia.

Theodoric, Antipope.