Results 111 to 120 of about 1,319 (203)

Parallel Inversion of 3D Airborne Transient Electromagnetic Data Using an Approximate Jacobi Matrix

Remote Sensing
In geophysical inversion issues, the Jacobian matrix computation takes the greatest time, and it is the most significant factor limiting the inversion’s calculation speed.
Da Lei, Hao Ren, Ruo Wang, Zhongxing Wang, Changmin Fu   +4 more
doaj   +1 more source

Discrete analogues of second‐order Riesz transforms

Journal of the London Mathematical Society, Volume 113, Issue 3, March 2026.
Abstract Discrete analogues of classical operators in harmonic analysis have been widely studied, revealing deep connections with areas such as ergodic theory and analytic number theory. This line of research is commonly known as Discrete Analogues in Harmonic Analysis (DAHA).
Rodrigo Bañuelos, Daesung Kim
wiley   +1 more source

A New Inverse Eigenvalue Problem for Jacobi Matrices and Corresponding Mass-Spring System

پژوهش‌های ریاضی, 2020
Introduction Many problems in sciences and engineering can be studied by mathematical models. These models are classified as direct problems and inverse problems.
Hanif Mirzaei
doaj  

Toral symmetries of collapsed ancient solutions to the homogeneous Ricci flow

Journal of the London Mathematical Society, Volume 113, Issue 3, March 2026.
Abstract Collapsed ancient solutions to the homogeneous Ricci flow on compact manifolds occur only on the total space of principal torus bundles. Under an algebraic assumption that guarantees flowing through diagonal metrics and a tameness assumption on the collapsing directions, we prove that such solutions have additional symmetries, that is, they ...
Anusha M. Krishnan, Francesco Pediconi, Sammy Sbiti   +2 more
wiley   +1 more source

A Spectral Approach to Solve High-Order Ordinary Differential Equations: Improved Operational Matrices for Exponential Jacobi Functions

Mathematics
This paper presents a novel numerical approach to handling ordinary differential equations (ODEs) with initial conditions (ICs) by introducing generalized exponential Jacobi functions (GEJFs). These GFJFs satisfy the associated ICs.
Hany Mostafa Ahmed
doaj   +1 more source

A Weyl Matrix Perspective on Unbounded Non-Self-Adjoint Jacobi Matrices. [PDF]

Complex Anal Oper Theory
Eichinger B, Lukić M, Young G.
europepmc   +1 more source

A useful formula for periodic Jacobi matrices on trees. [PDF]

Proc Natl Acad Sci U S A
Banks J, Breuer J, Garza-Vargas J, Seelig E, Simon B.   +4 more
europepmc   +1 more source

Numerical analysis, spectral graph theory, orthogonal polynomials and quantum algorithms. [PDF]

Philos Trans A Math Phys Eng Sci
Minenkova A, Mograby G, Zhan H.
europepmc   +1 more source

A Fourier-Jacobi Dirichlet series for cusp forms on orthogonal groups. [PDF]

Res Number Theory
Psyroukis R.
europepmc   +1 more source

A Sparse Hierarchical <i>hp</i>-Finite Element Method on Disks and Annuli. [PDF]

J Sci Comput
Papadopoulos IPA, Olver S.
europepmc   +1 more source