Results 141 to 150 of about 2,797 (179)
[Clinical and microbiological effectiveness of Helicobacter pylori eradication treatment with triple therapy]. [PDF]
Aten PrimariaGhandour Fawaz Y +5 more
europepmc +1 more source
Los umbrales de Umbral: primeros pasos novelescos de Francisco Umbral
, 2001 openaire +1 more source
Umbral “classical” polynomials
Journal of Mathematical Analysis and Applications, 2014 We study the umbral "classical" orthogonal polynomials with respect to a generalized derivative operator $\cal D$ which acts on monomials as ${\cal D} x^n = μ_n x^{n-1}$ with some coefficients $μ_n$. Let $P_n(x)$ be a set of orthogonal polynomials. Define the new polynomials $Q_n(x) =μ_{n+1}^{-1}{\cal D} P_{n+1}(x)$.
Alexei Zhedanov
exaly +3 more sources
Baxter Algebras and the Umbral Calculus
Advances in Applied Mathematics, 2001 This papers aims to unite two mathematical areas championed by G.-C. Rota: umbral calculus and Baxter algebras. The umbral calculus refers to algebraic combinatorics of sequences of polynomials of binomial type and other related sequences. Rota showed how this is encapsulated by a certain `umbral algebra' consisting of linear functionals on these ...
Li Guo
exaly +3 more sources
Umbral Methods and Harmonic Numbers
Axioms, 2018 The theory of harmonic-based functions is discussed here within the framework of umbral operational methods. We derive a number of results based on elementary notions relying on the properties of Gaussian integrals.
Giuseppe Dattoli +2 more
exaly +8 more sources