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Numerical symbols consisted probably of strokes or notches cut in wood or stone, which were intelligible across cultures. For example, one notch in a bone represented one animal, person, or object. Numerical notation's distinctive feature—symbols having both local and intrinsic values—implies a state of civilization at the period of its ...
The following table lists many specialized symbols commonly used in modern mathematics, ordered by their introduction date. The table can also be ordered alphabetically by clicking on the relevant header title.
Robert Recorde: The Life and Times of a Tudor Mathematician (University of Wales Press, distributed by University of Chicago Press) 232 pages; Jack Williams (2011). Robert Recorde: Tudor Polymath, Expositor and Practitioner of Computation (Heidelberg, Springer) (History of Computing). pbk edition. ISBN 978-0-85729-861-4. J. W. S. Cassels (1976).
The Varangian Guard (Greek: Τάγμα τῶν Βαράγγων, romanized: Tágma tōn Varángōn) was an elite unit of the Byzantine army from the tenth to the fourteenth century who served as personal bodyguards to the Byzantine emperors.
Year 1453 was a common year starting on Monday of the Julian calendar, the 1453rd year of the Common Era (CE) and Anno Domini (AD) designations, the 453rd year of the 2nd millennium, the 53rd year of the 15th century, and the 4th year of the 1450s decade.
The multiplication sign (×), also known as the times sign or the dimension sign, is a mathematical symbol used to denote the operation of multiplication, which results in a product. [1] The symbol is also used in botany, in botanical hybrid names. The form is properly a four-fold rotationally symmetric saltire. [2]
At the onset of the siege, probably fewer than 50,000 people were living within the walls, including the refugees from the surrounding area. [52] [note 5] Turkish commander Dorgano, who was in Constantinople working for the Emperor, was also guarding one of the quarters of the city on the seaward side with the Turks in his pay. These Turks kept ...
During this time, the Burgundian court culture was leading and so the Order of the Golden Fleece, founded there in 1430, was for many a model in the sense of a princely order based on the ideals of Christian chivalry. [3] In the course of time, many orders of knights have been dissolved due to a lack of people or the field of activity has changed.