Results 61 to 70 of about 39,546 (135)

A Re‐Examination of Foundational Elements of Cosmology

Fortschritte der Physik, Volume 74, Issue 3, March 2026.
ABSTRACT This paper undertakes a conceptual re‐examination of several foundational elements of cosmology through the lens of spacetime symmetries. A new derivation of the Friedmann–Lemaître–Robertson–Walker metric is obtained by a careful conceptual examination of rotations and translations on generic manifolds, followed by solving the rotational and ...
Lavinia Heisenberg
wiley   +1 more source

Logarithmic capacity and Riemann and Hilbert problems for generalized analytic functions

Доповiдi Нацiональної академiї наук України
The study of the Dirichlet problem with arbitrary measurable boundary data for harmonic functions in the unit disk is due to the famous Luzin dissertation.
V.Ya. Gutlyanskiĭ, O.V. Nesmelova, V.I. Ryazanov, A.S. Yefimushkin   +3 more
doaj   +1 more source

Hyperderivatives of the deformation series associated with arithmetic gamma values and characteristic p$p$ multiple zeta values

Journal of the London Mathematical Society, Volume 113, Issue 3, March 2026.
Abstract Number theory for positive characteristic contains analogues of the special values that were introduced by Carlitz; these include the Carlitz gamma values and Carlitz zeta values. These values were further developed to the arithmetic gamma values and multiple zeta values by Goss and Thakur, respectively.
Ryotaro Harada, Daichi Matsuzuki
wiley   +1 more source

On boundary-value problems for generalized analytic and harmonic functions

Доповiдi Нацiональної академiї наук України
The present paper is a natural continuation of our last articles on the Riemann, Hilbert, Dirichlet, Poincaré, and, in particular, Neumann boundary-value problems for quasiconformal, analytic, harmonic functions and the so-called A-harmonic functions ...
V.Ya. Gutlyanskiĭ, O.V. Nesmelova, V.I. Ryazanov, A.S. Yefimushkin   +3 more
doaj   +1 more source

Fractional Inner Products and Orthogonal Polynomial Structures: A Riemann-Liouville Framework for Spectral Approximation

Axioms
This paper develops an operator-oriented framework for spectral approximation in fractional calculus by introducing a fractional inner product defined through the Riemann-Liouville integral. Instead of modifying polynomial families, the proposed approach
Muath Awadalla, Dalal Alhwikem
doaj   +1 more source

Riemann-Hilbert problems, Toeplitz operators and ergosurfaces

Journal of High Energy Physics
The Riemann-Hilbert approach, in conjunction with the canonical Wiener-Hopf factorisation of certain matrix functions called monodromy matrices, enables one to obtain explicit solutions to the non-linear field equations of some gravitational theories ...
M. Cristina Câmara, Gabriel Lopes Cardoso   +1 more
doaj   +1 more source

Emergent Random Matrix Universality in Quantum Operator Dynamics

Physical Review X
The high complexity of many-body quantum dynamics means that essentially all analytical or numerical approaches either exploit special structure or are approximate in nature.
Oliver Lunt, Thomas Kriecherbauer, Kenneth T-R McLaughlin, Curt von Keyserlingk   +3 more
doaj   +1 more source

Diagonalization of the finite Hilbert transform on two adjacent intervals: the Riemann-Hilbert approach. [PDF]

Anal Math Phys, 2020
Bertola M, Blackstone E, Katsevich A, Tovbis A.   +3 more
europepmc   +1 more source

From Quantum Curves to Topological String Partition Functions. [PDF]

Commun Math Phys, 2023
Coman I, Pomoni E, Teschner J.
europepmc   +1 more source

Twist Fields in Many-Body Physics. [PDF]

Entropy (Basel)
Doyon B.
europepmc   +1 more source