Results 61 to 70 of about 6,967 (160)

Selfsimilarity of ``Riemann's nondifferentiable function''

open access: yes, 1994
The author gives a self-contained presentation of the differentiability properties of the function \(f(x):=\sum^ \infty_{n=1}\sin(n^ 2\pi x)/(n^ 2\pi)\) using selfsimilarity of the corresponding theta function. His main result is an asymptotic description of \(\varphi(x):=\sum^ \infty_{n=1}\exp(n^ 2 i\pi x)/(n^ 2 i\pi)\) near rational points leading to
openaire   +3 more sources

Generalized Fractional Integral Inequalities of σ-Convex Functions

open access: yesJournal of Mathematics
In this paper, we prove generalized fractional integral inequalities of Hermite–Hadamard–type with respect to a monotone function for σ-convex functions on account of the Riemann–Liouville fractional integral.
Shweta Lather, Harish Nagar
doaj   +1 more source

The Littlewood-Paley g-function associated with the Riemann-Liouville operator

open access: yesAnnales Universitatis Paedagogicae Cracoviensis: Studia Mathematica, 2013
First, we study the Gauss and Poisson semigroups connected with the Riemann-Liouville operator. Next, we dene and study the Littlewood-Paley g-function associated with the Riemann-Liouville operator for which we prove the Lp-boundedness for p ∈ ]1,
Amri Besma, Rachdi Lakhdar
doaj  

A nonlocal problem for fourth order hyperbolic equations with multiple characteristic

open access: yesElectronic Journal of Differential Equations, 2002
In this paper, we study fourth order differential equations with multiple characteristics and dominated low terms. We prove the existence and uniqueness of a Riemann function for this equation, and then provide an integral representation of the general ...
Bidzina Midodashvili
doaj  

Exploring Riemann’s functional equation

open access: yesCogent Mathematics, 2016
This is the final published version, Cogent Mathematics ...
openaire   +2 more sources

Existence of solutions to the Riemann problem for a model of two-phase flows

open access: yesElectronic Journal of Differential Equations, 2015
We study the existence of solutions of the Riemann problem for a model of two-phase flows. The model has the form of a nonconservative hyperbolic system of balance laws. Based on a phase decomposition approach, we obtain all the wave curves.
Mai Duc Thanh, Dao Huy Cuong
doaj  

Experimental observation of energy-band Riemann surface. [PDF]

open access: yesSci Adv
Cheng D   +5 more
europepmc   +1 more source

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