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The fundamental problem of the calculus of variations on time scales concerns the minimization of a delta-integral over all trajectories satisfying given boundary conditions. In this paper we prove the second Euler-Lagrange necessary…

Optimization and Control · Mathematics 2011-02-22 Zbigniew Bartosiewicz , Natalia Martins , Delfim F. M. Torres

In this article we determine several theorems and methods for solving linear congruences and systems of linear congruences, and we find the number of distinct solutions. Many examples of solving congruences are given.

General Mathematics · Mathematics 2007-05-23 Florentin Smarandache

We provide a new characterization of the logarithmic Sobolev inequality.

Analysis of PDEs · Mathematics 2017-02-16 Hoai-Minh Nguyen , Marco Squassina

In this paper, we introduce the nabla fractional derivative and fractional integral on time scales in the Riemann-Liouville sense. We also introduce the nabla fractional derivative in Gr\"unwald-Letnikov sense. Some of the basic properties…

General Mathematics · Mathematics 2021-12-28 Bikash Gogoi , Utpal Kumar Saha , Bipan Hazarika , Delfim F. M. Torres , Hijaz Ahmad

We consider the Hodge filtration on the sheaf of meromorphic functions along free divisors for which the logarithmic comparison theorem holds. We describe the Hodge filtration steps as submodules of the order filtration on a cyclic…

Algebraic Geometry · Mathematics 2022-04-25 Alberto Castaño Domínguez , Luis Narváez Macarro , Christian Sevenheck

We present some properties of the gradient of a mu-differentiable function. The Method of Lagrange Multipliers for mu-differentiable functions is then exemplified.

Classical Analysis and ODEs · Mathematics 2008-07-21 Ricardo Almeida , Delfim F. M. Torres

In this paper we introduce an applicative theory which characterizes the polynomial hierarchy of time.

Logic in Computer Science · Computer Science 2011-01-31 Reinhard Kahle , Isabel Oitavem

Recent breakthrough methods \cite{gggz,joux,bgjt} on computing discrete logarithms in small characteristic finite fields share an interesting feature in common with the earlier medium prime function field sieve method \cite{jl}. To solve…

Computational Complexity · Computer Science 2014-02-27 Ming-Deh Huang , Anand Kumar Narayanan

The purpose of this article is to study Bohr inequalities involving the absolute values of the coefficients of an operator valued function. To be more specific, we establish an operator valued analogue of a classical result regarding the…

Complex Variables · Mathematics 2020-03-13 Bappaditya Bhowmik , Nilanjan Das

A new differential-recurrence relation for the B-spline functions of the same degree is proved. From this relation, a recursive method of computing the coefficients of B-spline functions of degree $m$ in the Bernstein-B\'{e}zier form is…

Numerical Analysis · Mathematics 2022-10-13 Filip Chudy , Paweł Woźny

We give two natural definitions of polynomial-time computability for L2 functions; and we show them incomparable (unless complexity class FP_1 includes #P_1).

Computational Complexity · Computer Science 2026-02-03 Aras Bacho , Svetlana Selivanova , Martin Ziegler

We discuss classical and quantum algorithms for solvability testing and finding integer solutions x,y of equations of the form af^x + bg^y = c over finite fields GF(q). A quantum algorithm with time complexity q^(3/8) (log q)^O(1) is…

Quantum Physics · Physics 2008-04-08 Wim van Dam , Igor E. Shparlinski

We give explicit criteria of solvability for families of linear systems on time scales. We introduce a new method of embedding a time scale into a non-autonomous system of ODEs. This will be the first step to implementing the structural…

Dynamical Systems · Mathematics 2022-03-31 Sergey Kryzhevich

We introduce a discrete-time fractional calculus of variations on the time scale $h\mathbb{Z}$, $h > 0$. First and second order necessary optimality conditions are established. Examples illustrating the use of the new Euler-Lagrange and…

Optimization and Control · Mathematics 2010-10-29 Nuno R. O. Bastos , Rui A. C. Ferreira , Delfim F. M. Torres

We develop a new efficient algorithm for the analysis of large-scale time series data. We firstly define rolling averages, derive their analytical properties, and establish their asymptotic distribution. These theoretical results are…

Methodology · Statistics 2022-12-26 Ali Eshragh , Glen Livingston , Thomas McCarthy McCann , Luke Yerbury

In this paper, we develop the theory of the necklace ring and the logarithmic function. Regarding the necklace ring, we introduce the necklace ring functor $Nr$ from the category of special $\ld$-rings into the category of special…

Rings and Algebras · Mathematics 2007-05-23 Young-Tak Oh

In standard quantum theory, time is not an observable. It enters as a parameter in the Schr\"odinger equation, but there is no measurement operator associated to it. Nevertheless, one may take an operational viewpoint and regard time as the…

Quantum Physics · Physics 2018-06-26 Sandra Stupar , Christian Klumpp , Renato Renner , Nicolas Gisin

In this article we present logarithmic methods for solving first order and second order ordinary differential equations. The essence of the method is that we apply the basic properties derivatives and logarithms to reduce the number of…

General Mathematics · Mathematics 2023-01-05 Artem Ponomarenko

This article describes a method for constructing approximations to periodic solutions of dynamic Lorenz system with classical values of the system parameters. The author obtained a system of nonlinear algebraic equations in general form…

Numerical Analysis · Mathematics 2021-02-10 Alexander N. Pchelintsev

In phase space, we analytically obtain the characteristic functions (CFs) of a forced harmonic oscillator [Talkner et al., Phys. Rev. E, 75, 050102 (2007)], a time-dependent mass and frequency harmonic oscillator [Deffner and Lutz, Phys.…

Statistical Mechanics · Physics 2019-12-25 Yixiao Qian , Fei Liu