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We establish two nonlinear retarded integral inequalities. Bounds on the solution of some retarded equations are then obtained.

Classical Analysis and ODEs · Mathematics 2012-11-06 Rui A. C. Ferreira , Delfim F. M. Torres

The aim of this paper is to provide Markov-type inequalities in the setting of weighted Sobolev spaces when the considered weights are generalized classical weights. Also, as results of independent interest, some basic facts about Sobolev…

Classical Analysis and ODEs · Mathematics 2015-01-27 Francisco Marcellán , Yamilet Quintana , José M. Rodríguez

We prove several Sobolev inequalities, which are then used to establish a fractional Hardy-Sobolev- Maz'ya inequality on the upper halfspace.

Functional Analysis · Mathematics 2015-03-17 Craig A. Sloane

Space-like and time-like invariant space-time intervals are used to analyse measurements of spatial and temporal distances. The former are found to be Lorentz invariant --there is no `relativistic length contraction', whereas the latter…

General Physics · Physics 2009-09-01 J. H. Field

We introduce a discrete-time fractional calculus of variations on the time scales $\mathbb{Z}$ and $(h\mathbb{Z})_a$. First and second order necessary optimality conditions are established. Some numerical examples illustrating the use of…

Classical Analysis and ODEs · Mathematics 2012-02-15 Nuno R. O. Bastos

The fundamental matrix and the delay Lyapunov matrix of linear delay difference equations are introduced. Some properties of the Lyapunov matrix, and the jump discontinuities of its derivative are proven, leading to its construction in the…

Dynamical Systems · Mathematics 2016-12-15 Emanuel Rocha , Sabine Mondié , Michael Di Loreto

We prove inequalities involving intrinsic and extrinsic radii and diameters of tetrahedra.

Metric Geometry · Mathematics 2019-07-01 Jin-ichi Itoh , Joël Rouyer , Costin Vîlcu

In this short paper we generalize the classical inequality between the norms in Lebesgue spaces of the functions and its derivatives, which in the multidimensional case are called Sobolev's inequalities, on the many popular classes pairs of…

Functional Analysis · Mathematics 2010-02-01 E. Ostrovsky , E. Rogover , L. Sirota

In this paper, some reverses of the Cauchy-Bunyakovsky-Schwarz inequality in 2-inner product spaces are given. Using this framework, some applications for determinantal integral inequalities are also provided.

Functional Analysis · Mathematics 2007-05-23 S. S. Dragomir , Y. J. Cho , S. S. Kim

We prove a more general version of the Gruss inequality by using the recent theory of combined dynamic derivatives on time scales and the more general notions of diamond-alpha derivative and integral. For the particular case when alpha = 1,…

Classical Analysis and ODEs · Mathematics 2009-09-18 Moulay Rchid Sidi Ammi , Delfim F. M. Torres

In this paper, we establish several new inequalities for some differantiable mappings that are connected with the celebrated Hermite-Hadamard integral inequality. Some applications for special means of real numbers are also provided.

Classical Analysis and ODEs · Mathematics 2013-04-03 A. Saglam , M. Z. Sarikaya , H. Yildirim

We introduce a notion of fractional (noninteger order) derivative on an arbitrary nonempty closed subset of the real numbers (on a time scale). Main properties of the new operator are proved and several illustrative examples given.

Classical Analysis and ODEs · Mathematics 2016-09-06 Benaoumeur Bayour , Delfim F. M. Torres

We consider integrals in the sense of Choquet with respect to the $\delta$-dimensional Hausdorff content for continuously differentiable functions defined on open, connected sets in the Euclidean $n$-space, $n\geq 2$, $0<\delta\le n$. In…

Analysis of PDEs · Mathematics 2024-09-12 Petteri Harjulehto , Ritva Hurri-Syrjänen

A global definition of time-asymmetry is presented. Schulman's two arrows of time model is criticized.

General Relativity and Quantum Cosmology · Physics 2007-05-23 Mario Castagnino , Luis Lara , Olimpia Lombardi

We discuss the inequalities for $q$-integrals because of the fact that the inequalities can be very useful in the future mathematical research. Since $q$-integral of a function over an interval $[a,b]$ is defined by the difference of two…

Classical Analysis and ODEs · Mathematics 2007-05-23 Predrag M. Rajkovic , Sladjana D. Marinkovic , Miomir S. Stankovic

Let $A$ be an $m\times m$ positive semidefinite block matrix with each block being $n$-square. We write $\mathrm{tr}_1$ and $\mathrm{tr}_2$ for the first and second partial trace, respectively. In this paper, we prove the following…

Functional Analysis · Mathematics 2021-12-23 Yongtao Li , Weijun Liu , Yang Huang

We prove isoperimetric inequalities for quotients of $n$-dimensional Affine buildings. We use these inequalities to prove topological overlapping for the 2-dimensional skeletons of these buildings.

Combinatorics · Mathematics 2015-02-13 Izhar Oppenheim

We prove a version of the Euler-Lagrange equations for certain problems of the calculus of variations on time scales with higher-order delta derivatives.

Optimization and Control · Mathematics 2009-08-13 Rui A. C. Ferreira , Delfim F. M. Torres

The bases of the theory of integrals for multidimensional differential systems are stated. The integral equivalence of total differential systems, linear homogeneous systems of partial differential equations, and Pfaff systems of equations…

Dynamical Systems · Mathematics 2009-09-18 V. N. Gorbuzov

Two time scale stochastic approximation is analyzed when the iterates on either or both time scales do not necessarily converge.

Probability · Mathematics 2024-12-31 Vivek S Borkar