squaring of circle
31History of geometry — Geometry (Greek γεωμετρία ; geo = earth, metria = measure) arose as the field of knowledge dealing with spatial relationships. Geometry was one of the two fields of pre modern mathematics, the other being the study of numbers. Classic geometry… …
32Euclidean geometry — A Greek mathematician performing a geometric construction with a compass, from The School of Athens by Raphael. Euclidean geometry is a mathematical system attributed to the Alexandrian Greek mathematician Euclid, which he described in his… …
33Timeline of mathematics — A timeline of pure and applied mathematics history. Contents 1 Before 1000 BC 2 1st millennium BC 3 1st millennium AD 4 1000–1500 …
34Indian mathematics — mdash;which here is the mathematics that emerged in South Asia from ancient times until the end of the 18th century mdash;had its beginnings in the Bronze Age Indus Valley civilization (2600 1900 BCE) and the Iron Age Vedic culture (1500 500 BCE) …
35Proof of impossibility — A proof of impossibility, sometimes called a negative proof or negative result , is a proof demonstrating that a particular problem cannot be solved, or cannot be solved in general. Often proofs of impossibility have put to rest decades or… …
36Cyrus Pitt Grosvenor — Born October 18, 1792 Grafton, Massachusetts Died February 11, 1879 Albion, Michigan Nationali …
37Eugene Lyons — (1 July1898 ndash;7 January1985) was a U.S. journalist and writer. At one time a Communist fellow traveler, he became highly critical of the Soviet Union after he lived there for a few years.He was born to a Jewish family in Uzlyany in what is… …
38Konstantinos Tzechanis — Cover of Εγχειρίδιον αριθμητικής (Manual of Mathematics), printed in Halle, 1769 Born 1740 Moscopole, Ottoman Empire, present day Albania …
39Bryson of Heraclea — (ca. 450 BCE ca. 390 BCE) was an ancient Greek mathematician and sophist who contributed to solving the problem of squaring the circle and calculating pi. Life and workAlthough little is known about the life of Bryson, it is believed that he was… …
40Angle trisection — The problem of trisecting the angle is a classic problem of compass and straightedge constructions of ancient Greek mathematics.Two tools are allowed # An un marked straightedge, and # a compass, Problem: construct an angle one third a given… …
