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A mathematical symbol is a figure or a combination of figures that is used to represent a mathematical object, an action on mathematical objects, a relation between mathematical objects, or for structuring the other symbols that occur in a formula. As formulas are entirely constituted with symbols of various types, many symbols are needed for ...
In his 1992 book Secrets of Rook Endings and other books in the series (Secrets of Minor-Piece Endings and Secrets of Pawnless Endings), John Nunn uses these symbols in a more specific way in the context of endgames where the optimal line of play can be determined with certainty:
Two schools of thought exist on the meaning of hex signs. One school ascribes a talismanic nature to the signs; the other sees them as purely decorative. [2] Both schools recognize that there are sometimes superstitions associated with certain hex sign themes and neither ascribes strong magical power to them. [3] The Amish do not use hex signs. [2]
Great Seal of the Union – authorised by King George V in 1910, and used until 1937 on state documents signed by the Governor-General. [1]Royal Great Seal of the Union – authorised by the Royal Executive Functions and Seals Act 1934, and used until 1961 on state documents signed by the monarch on the advice of the South African government.
A list of Chinese symbols, designs, and art motifs, including decorative ornaments, patterns, auspicious symbols, and iconography elements, used in Chinese visual arts, sorted in different theme categories.
Skull and crossbones, a common symbol for poison and other sources of lethal danger (GHS hazard pictograms). Hazard symbols are recognizable symbols designed to warn about hazardous or dangerous materials, locations, or objects, including electromagnetic fields, electric currents; harsh, toxic or unstable chemicals (acids, poisons, explosives); and radioactivity.
According to the Abjad system of isopsephy, the word Baháʼ has a numerical equivalence of 9, and thus there is frequent use of the number 9 in Baháʼí symbols. [1] The most commonly used symbol connected to the number 9 is the nine-pointed star, ; there is no particular design of the nine-pointed star that is used more often than others.
This was the book in which the equals sign was introduced within a printed edition. [6] With the publication of this book Recorde is credited with introducing algebra into the Island of Britain with a systematic notation. [7] [8] A medical work, The Urinal of Physick (1548), frequently reprinted. [9]
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