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Adding 4 hours to 9 o'clock gives 1 o'clock, since 13 is congruent to 1 modulo 12. In mathematics, modular arithmetic is a system of arithmetic for integers, where numbers "wrap around" when reaching a certain value, called the modulus. The modern approach to modular arithmetic was developed by Carl Friedrich Gauss in his book Disquisitiones ...
The square root of 6 is the positive real number that, when multiplied by itself, gives the natural number 6. It is more precisely called the principal square root of 6, to distinguish it from the negative number with the same property. This number appears in numerous geometric and number-theoretic contexts. It can be denoted in surd form as ...
Objects studied in discrete mathematics include integers, graphs, and statements in logic. [1][2][3] By contrast, discrete mathematics excludes topics in "continuous mathematics" such as real numbers, calculus or Euclidean geometry. Discrete objects can often be enumerated by integers; more formally, discrete mathematics has been characterized ...
6 is the atomic number of carbon. [55] Carbon-12, its most stable isotope, has six protons, six nuetrons, and six electrons. The sixfold symmetry of snowflakes arises from the hexagonal crystal structure of ordinary ice. [56] A hexamer is an oligomer made of six subunits.
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The Commonwealth of Nations is a voluntary association of 56 sovereign states, referred to as Commonwealth countries. [1] Most of them were British colonies or dependencies of those colonies. No government in the Commonwealth exercises power over the others, as is the case in a political union. Rather, the Commonwealth is an international ...
Wigner's 6-j symbols were introduced by Eugene Paul Wigner in 1940 and published in 1965. They are defined as a sum over products of four Wigner 3-j symbols, The summation is over all six mi allowed by the selection rules of the 3- j symbols. They are closely related to the Racah W-coefficients, which are used for recoupling 3 angular momenta ...