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Published in 2021 at "International Journal of Applied and Computational Mathematics"
DOI: 10.1007/s40819-021-01047-w
Abstract: We derive integrals of combination of Gauss and Bessel functions, by the use of umbral techniques. We show that the method allows the possibility of pursuing new and apparently fruitful avenues in the theory of…
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Keywords:
special functions;
functions umbral;
umbral methods;
integrals special ... See more keywords
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Published in 2019 at "Axioms"
DOI: 10.3390/axioms8030077
Abstract: Dual numbers and their higher-order version are important tools for numerical computations, and in particular for finite difference calculus. Based on the relevant algebraic rules and matrix realizations of dual numbers, we present a novel…
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Keywords:
numbers operational;
operational umbral;
dual numbers;
umbral methods ... See more keywords
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Published in 2021 at "Symmetry"
DOI: 10.3390/sym13050781
Abstract: The formalism of differ-integral calculus, initially developed to treat differential operators of fractional order, realizes a complete symmetry between differential and integral operators. This possibility has opened new and interesting scenarios, once extended to positive…
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Keywords:
derivative operator;
harmonic numbers;
operator umbral;
series ... See more keywords