Results 41 to 50 of about 577,125 (180)
Differential Equations on Functions from R into Real Banach Space
Abstract In this article, we describe the differential equations on functions from R into real Banach space. The descriptions are based on the article [20]. As preliminary to the proof of these theorems, we proved some properties of differentiable functions on real normed space.
Keiko Narita +2 more
openaire +3 more sources
Quantum-classical crossover in electrodynamics [PDF]
A classical field theory is proposed for the electric current and the electromagnetic field interpolating between microscopic and macroscopic domains.
A. D. Fokker +20 more
core +2 more sources
On the Generalized Stabilities of Functional Equations via Isometries
The main goal of this research article is to investigate the stability of generalized norm-additive functional equations. This study demonstrates that these equations are Hyers-Ulam stable for surjective functions from an arbitrary group G to a real ...
Muhammad Sarfraz +3 more
doaj +1 more source
On a Functional Equation Associated with (a,k)-Regularized Resolvent Families
Let a∈Lloc1(ℝ+) and k∈C(ℝ+) be given. In this paper, we study the functional equation R(s)(a*R)(t)-(a*R)(s)R(t)=k(s)(a*R)(t)-k(t)(a*R)(s), for bounded operator valued functions R(t) defined on the positive real line ℝ+.
Carlos Lizama, Felipe Poblete
doaj +1 more source
Cold atoms in real-space optical lattices
Cold atoms in optical lattices are described in {\it real space} by multi-orbital mean-field Ans\"atze. In this work we consider four typical systems: (i) spinless identical bosons, (ii) spinor identical bosons (iii), Bose-Bose mixtures, and (iv) Bose ...
A. Szabo +5 more
core +1 more source
Let T⊂R be a periodic time scale in shifts δ± with period P∈(t0,∞)T and t0∈T is nonnegative and fixed. By using a multiple fixed point theorem in cones, some criteria are established for the existence and multiplicity of positive solutions in shifts δ ...
Meng Hu, Lili Wang, Zhigang Wang
doaj +1 more source
Spectral Functions from the Functional Renormalization Group
We present results for in-medium spectral functions obtained within the Functional Renormalization Group framework. The analytic continuation from imaginary to real time is performed in a well-defined way on the level of the flow equations. Based on this
Jung, Christopher +4 more
core +1 more source
Bethe Ansatz equations for the classical A^(1)_n affine Toda field theories [PDF]
We establish a correspondence between classical A(1)n affine Toda field theories and An Bethe Ansatz systems. We show that the connection coefficients relating specific solutions of the associated classical linear problem satisfy functional relations of ...
Adamopoulou, Panagiota, Dunning, Clare
core +2 more sources
A finite bidimensional wavelet framework for computer graphics
A lot of material has been written about wavelet theory. Most of these texts provide an elegant framework from the functional and real analysis point of view.
Francisco José Benavides Murillo +2 more
doaj +1 more source
The Lerch Zeta Function II. Analytic Continuation [PDF]
This is the second of four papers that study algebraic and analytic structures associated with the Lerch zeta function. In this paper we analytically continue it as a function of three complex variables.
Apostol T. M. +7 more
core +1 more source

