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We report on an inversion tool for a class of oriented conditional constructor term rewriting systems. Four well-behaved rule inverters ranging from trivial to full, partial and semi-inverters are included. Conditional term rewriting…

Programming Languages · Computer Science 2021-09-08 Maria Bendix Mikkelsen , Robert Glück , Maja H. Kirkeby

We introduce a new fractional derivative that generalizes the so-called alternative fractional derivative recently proposed by Katugampola. We denote this new differential operator by $\mathscr{D}_{M}^{\alpha,\beta }$, where the parameter…

Classical Analysis and ODEs · Mathematics 2017-08-18 J. Vanterler da C. Sousa , E. Capelas de Oliveira

In Hybrid Monte Carlo simulations for full QCD, the gauge fields evolve smoothly as a function of Molecular Dynamics time. Here we investigate improved methods of estimating the trial or starting solutions for the Dirac matrix inversion as…

High Energy Physics - Lattice · Physics 2009-10-28 R. C. Brower , T. Ivanenko , A. R. Levi , K. N. Orginos

We propose a detailed proof of the fact that the inverse of Ackermann function is computable in linear time.

Computational Complexity · Computer Science 2023-06-22 Claude Sureson

After the short survey of the Klein Paradox in 3-dimensional relativistic equations, we present a detailed consideration of Dirac modified equation, which follows by one particle infinite overweighting in Salpeter Equation. It is shown,…

High Energy Physics - Theory · Physics 2007-05-23 N. Kevlishvili , A. Khelashvili , T. Nadareishvili

We reduce boundary determination of an unknown function and its normal derivatives from the (possibly weighted and attenuated) broken ray data to the injectivity of certain geodesic ray transforms on the boundary. For determination of the…

Differential Geometry · Mathematics 2014-09-29 Joonas Ilmavirta

It is well known that in a generally covariant gravitational theory the choice of spacetime scalars as coordinates yields phase-space observables (or "invariants"). However their relation to the symmetry group of diffeomorphism…

General Relativity and Quantum Cosmology · Physics 2009-11-19 J. M. Pons , D. C. Salisbury , K. A. Sundermeyer

Some differential implications of classical Marx-Strohh\"acker theorem are extended for multivalent functions. These results are also generalized for functions with fixed second coefficient by using the theory of first order differential…

Complex Variables · Mathematics 2021-03-23 Prachi Gupta , Sumit Nagpal , V. Ravichandran

This Letter is based on the $\kappa$-Dirac equation, derived from the $\kappa$-Poincar\'{e}-Hopf algebra. It is shown that the $\kappa$-Dirac equation preserves parity while breaks charge conjugation and time reversal symmetries.…

High Energy Physics - Theory · Physics 2014-03-21 F. M. Andrade , E. O. Silva , M. M. Ferreira , E. C. Rodrigues

Two different aspects of formation control of multiple agents subjected to linear transformation have been addressed in this paper. We consider a set of complex single integrator systems so that the dimension of the system reduces to half…

Systems and Control · Computer Science 2015-06-03 Soumic Sarkar , Indra Narayan Kar

We present a proof of Hadamard Inverse Function Theorem by the methods of Variational Analysis, adapting an idea of I. Ekeland and E. Sere.

Functional Analysis · Mathematics 2024-08-05 Milen Ivanov , Nadia Zlateva

The significance of the broken ray transform (BRT) is due to its occurrence in a number of modalities spanning optical, x-ray, and nuclear imaging. When data are indexed by the scatter location, the BRT is both linear and shift invariant.…

Signal Processing · Electrical Eng. & Systems 2019-08-07 Michael R. Walker , Joseph A. O'Sullivan

The difference-of-convex algorithm (DCA) and its variants are the most popular methods to solve the difference-of-convex optimization problem. Each iteration of them is reduced to a convex optimization problem, which generally needs to be…

Optimization and Control · Mathematics 2025-05-19 Songnian He , Qiao-Li Dong , Michael Th. Rassias

The overlap Dirac operator at nonzero quark chemical potential involves the computation of the sign function of a non-Hermitian matrix. In this talk we present an iterative method, first proposed by us in Ref. [1], which allows for an…

High Energy Physics - Lattice · Physics 2009-01-14 Jacques Bloch , Andreas Frommer , Bruno Lang , Tilo Wettig

We present a proof of the generalized Kramers-Pasternack relation using the hyper-radial equation approach. Following Kramers' method, we manipulate the radial equation by multiplying it with an expression closely related to terms in the…

Quantum Physics · Physics 2025-02-28 Avoy Jana

A new class of truncation schemes of delta expansion on the lattice is studied. We show that the order of expansion in delta which is introduced as the dilation parameter can be taken large enough and the result gives rise to the Borel…

High Energy Physics - Lattice · Physics 2008-12-18 Hirofumi Yamada

In this article, we prove that Dirac brackets for Hamiltonian and non-Hamiltonian constrained systems can be derived recursively. We then study the applicability of that formulation in analysis of some interesting physical models.…

Mathematical Physics · Physics 2009-02-09 Sonnet Q H Nguyen , Lukasz A Turski

A generalization of the already studied transformations of the linear differential equation into a system of the first order equations is given. The proposed transformation gives possibility to get new forms of the N-dimensional system of…

Classical Analysis and ODEs · Mathematics 2018-04-20 M. I. Ayzatsky

The Dirac equation is one of the most fundamental equations of modern physics. It is a spinor equation, but some tensor equivalents of the equation were proposed previously. Those equivalents were either nonlinear or involved several…

Quantum Physics · Physics 2024-08-21 Andrey Akhmeteli

We consider the linear system of viscoelasticity with the homogeneous Dirichlet boundary condition. First we prove a Carleman estimate with boundary values of solutions of viscoelasticity system. Since a solution $u$ under consideration is…

Analysis of PDEs · Mathematics 2017-11-28 Oleg Imanuvilov , Masahiro Yamamoto
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