Results 21 to 30 of about 12,918,846 (54)
A new expression for umbral operators and power series inversion
, 1977 It is shown here the compositional inversion of formal power series has a natural formulation in terms of umbral operators. This fact is used to derive a new proof of the Lagrange inversion theorem by operator theoretic methods.
S. A. Joni, A. M. Garsia
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Umbral methods and generalized Bessel functions
The umbral methods are originated from operational calculus. The umbraloperational methods play an important role in simplifying the theory of special functions.
G. Dattoli +3 more
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, 2018 En este video se muestra el concepto de umbral de rentabilidad, su expresión matemática y su interpretación gráficahttps://media.upv.es/player/?id=0a3da530-6c91-11e8-bc03-6b9390fe7cf9Díaz-Madroñero Boluda, FM. (2018). Umbral de rentabilidad.
Díaz-Madroñero Boluda, Francisco Manuel
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Observations of umbral flashes in the resonant sunspot chromosphere [PDF]
Context. In sunspot umbrae, the core of some chromospheric lines exhibits periodic brightness enhancements known as umbral flashes. The consensus is that they are produced by the upward propagation of shock waves.
T. Felipe +13 more
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An instance of umbral methods in representation theory: the parking function module.
, 2008 We test the umbral methods introduced by Rota and Taylor within the theory of representation of the symmetric group. We prove that the volume polynomial of Pitman and Stanley represents the Frobenius characteristic of the Haiman parking function module,
SENATO PULLANO, Domenico +1 more
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, 2018 Libro reseñado: Shir (Canto en el umbral). Mónica Gontovnik.
Ardila, Emma Lucía
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, 2007 Si el viajero está en el umbral no es porque dude del siguiente paso, sino porque el umbral, como la luna, acompaña al viajero en cada pisada. O por lo menos así me lo parece. Y es en ese “parecer” donde radica la dificultad de reseñar una obra literaria,
Mejía, César, Mejía, César A.
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