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  1. En matemáticas, las funciones de Bessel, primero definidas por el matemático Daniel Bernoulli y más tarde generalizadas por Friedrich Bessel, son soluciones canónicas y(x) de la ecuación diferencial de Bessel:

  2. These linear combinations are also known as Bessel functions of the third kind; they are two linearly independent solutions of Bessel's differential equation. They are named after Hermann Hankel . These forms of linear combination satisfy numerous simple-looking properties, like asymptotic formulae or integral representations.

  3. For a more intuitive explanation of the need for Bessel's correction, see § Source of bias. Generally Bessel's correction is an approach to reduce the bias due to finite sample size. Such finite-sample bias correction is also needed for other estimates like skew and kurtosis, but in these the inaccuracies are often significantly larger.

  4. Few years later ― 1835-1836 ― followed Friedrich Georg Wilhelm von Struve at Dorpat (nowadays Tartu) university observatory, who measured the distance of Vega and published his results in 1837. Friedrich Bessel , a friend of Struve, carried out an intense observational campaign in 1837-1838 at Koenigsberg Observatory for the star 61 Cygni using a heliometer , and published his results in 1838.

  5. Die Lösungen der Besselschen Differentialgleichung heißen Bessel-Funktionen.Sie spielen eine wichtige Rolle in der Physik, da die Besselsche Differentialgleichung den radialen Anteil der Laplace-Gleichung bei zylindrischer Symmetrie darstellt.

  6. Bessel filters are often used in audio crossover systems. The filter's name is a reference to German mathematician Friedrich Bessel (1784–1846), who developed the mathematical theory on which the filter is based.

  7. Ritratto di Carl Friedrich Gauss, ad opera di Christian Albrecht Jensen. Johann Friedrich Carl Gauss (in tedesco: Gauß pronuncia [?·info]; latinizzato in Carolus Fridericus Gauss; Braunschweig, 30 aprile 1777 – Gottinga, 23 febbraio 1855) è stato un matematico, astronomo e fisico tedesco, che ha dato contributi determinanti in analisi matematica, teoria dei numeri, statistica, calcolo ...