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'''Bessel functions''', in mathematics, first defined by the mathematician Daniel Bernoulli and generalized by Friedrich Bessel, are canonical solutions ''y''(''x'') of Bessel's differential equation: | '''Bessel functions''', in mathematics, first defined by the mathematician Daniel Bernoulli and generalized by Friedrich Bessel, are canonical solutions ''y''(''x'') of Bessel's differential equation: | ||
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Although α and −α produce the same differential equation, it is conventional to define different Bessel functions for these two orders (e.g., so that the Bessel functions are mostly smooth functions of α). Bessel functions are also known as '''Cylinder functions''' or '''Cylindrical harmonics''' because they are found in the solution to Laplace's equation in cylindrical coordinates. | Although α and −α produce the same differential equation, it is conventional to define different Bessel functions for these two orders (e.g., so that the Bessel functions are mostly smooth functions of α). Bessel functions are also known as '''Cylinder functions''' or '''Cylindrical harmonics''' because they are found in the solution to Laplace's equation in cylindrical coordinates. | ||
The [[Covenant AI|artificial intelligence]] aboard the ''[[Ascendant Justice]]'' attempted to use Bessel functions to communicate with [[Cortana]] <ref>'''[[Halo: First Strike]]''', ''page 67''</ref>. [[Dominique]] had a tattoo of a Bessel function on his left wrist. | |||
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==Sources== | ==Sources== | ||
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[[Category:Science]] | [[Category:Science]] |