# Browse Our Mathematics and Statistics Journals

Mathematics and statistics journals publish papers on the theory and application of mathematics, statistics, and probability. Most mathematics journals have a broad scope that encompasses most mathematical fields. These commonly include logic and foundations, algebra and number theory, analysis (including differential equations, functional analysis and operator theory), geometry, topology, combinatorics, probability and statistics, numerical analysis and computation theory, mathematical physics, etc.

# Mathematics and Statistics

## You are looking at 31 - 40 of 11,088 items for

• Refine by Access: All Content
Clear All

# Ideals of Residuated Lattices

Studia Scientiarum Mathematicarum Hungarica
Authors: Liviu-Constantin Holdon and Arsham Borumand Saeid

In this article, we study ideals in residuated lattice and present a characterization theorem for them. We investigate some related results between the obstinate ideals and other types of ideals of a residuated lattice, likeness Boolean, primary, prime, implicative, maximal and ʘ-prime ideals. Characterization theorems and extension property for obstinate ideal are stated and proved. For the class of ʘ-residuated lattices, by using the ʘ-prime ideals we propose a characterization, and prove that an ideal is an ʘ-prime ideal iff its quotient algebra is an ʘ-residuated lattice. Finally, by using ideals, the class of Noetherian (Artinian) residuated lattices is introduced and Cohen’s theorem is proved.

Restricted access

# Interpolation by Differences In H∞

Studia Scientiarum Mathematicarum Hungarica
Authors: Francesc Tugores and Laia Tugores

We pose an interpolation problem for the space of bounded analytic functions in the disk. The interpolation is performed by a function and its di˛erence of values in points whose subscripts are related by an increasing application. We impose that the data values satisfy certain conditions related to the pseudohyperbolic distance, and characterize interpolating sequences in terms of uniformly separated subsequences.

Restricted access

# Nearly s-Semipermutable Subgroups

Studia Scientiarum Mathematicarum Hungarica
Author: Changwen Li

In this paper, we investigate the infiuence of nearly s-semipermutable subgroups on the structure of finite groups. Several recent results from the literature are improved and generalized.

Restricted access

# On Some Continued Fractions and Series

Studia Scientiarum Mathematicarum Hungarica
Authors: Khalil Ayadi, Chiheb Ben Bechir, and Iheb Elouaer

We exhibit some explicit continued fraction expansions and their representation series in different fields. Some of these continued fractions have a type of symmetry, known as folding symmetry. We will extracted those whose are specialized.

Restricted access

# Polynomial Entropy of the Logistic Map

Studia Scientiarum Mathematicarum Hungarica
Author: Milan Perić

We study the polynomial entropy of the logistic map depending on a parameter, and we calculate it for almost all values of the parameter. We show that polynomial entropy distinguishes systems with a low complexity (i.e. for which the topological entropy vanishes).

Restricted access

# Some Landau–Kolmogorov Type Inequalities for Differential Operators Generated by Polynomials

Studia Scientiarum Mathematicarum Hungarica
Authors: Vu Nhat Huy, Nguyen Ngoc Huy, and Chu Van Tiep
In this paper, we establish some Landau–Kolmogorov type inequalities for differential operators generated by polynomials in the following form
$P(D)fp≤K1(ε,P)fq+K2(ε,m)Dm(P(D)f)p$

for all $ε>0$ , where 0 < gp ≤ ∞, and the differential operator P (D) is obtained from the polynomial P (x) by substituting$x→−i∂/∂x$ . Moreover, the explicit form of $K1(ε,p)$ and $K2(ε,m)$

are given.

Restricted access

# A Unified Version of Weighted Weak Type Inequality for Martingale Maximal Operators

Studia Scientiarum Mathematicarum Hungarica
Authors: Yanbo Ren and Congbian Ma
Let ɣ and Φ1 be nondecreasing and nonnegative functions defined on [0, ∞), and Φ2 is an N -function, u, v and w are weights. A unified version of weighted weak type inequality of the form
$Φ1(λ)ℙu(f*>λ)≤C𝔼Φ2Cf∞υγ(λ)w$

for martingale maximal operators f is considered, some necessary and su@cient conditions for it to hold are shown. In addition, we give a complete characterization of three-weight weak type maximal inequality of martingales. Our results generalize some known results on weighted theory of martingale maximal operators.

Restricted access

# Weak Solutions for Obstacle Problems with Weak Monotonicity

Studia Scientiarum Mathematicarum Hungarica
Authors: Farah Balaadich and Elhoussine Azroul

This paper is concerned with the existence of weak solutions for obstacle problems. By means of the Young measure theory and a theorem of Kinderlehrer and Stampacchia, we obtain the needed result.

Restricted access

# Limiting distributions associated with moments of exponential Brownian functionals

Studia Scientiarum Mathematicarum Hungarica
Authors: Y. Hariya and M. Yor

During the last decade, a number of explicit results about the distributions of exponential functionals of Brownian motion with drift: have been obtained, often originating with the works of D. Dufresne.

In the present paper, we rely extensively on these results to show the existence of limiting measures as$T→∞$, when the law of ${Bt+μt,0≤_t≤_T}$ is perturbed by the Radon-Nikodym density consisting of either of the normalized functionals exp $(−αAT(μ))$ or $1/(AT(μ))m$. The results exhibit different regimes according to whether in the first case, and to a partition of the $(μ,m)$-plane in the second case.

Although a large number of similar studies have been made for, say, one-dimensional diffusions, the present study, which focuses upon Brownian exponential functionals, appears to be new.

Restricted access

# Automorphisms of Finite Order of Soluble Groups of Finite Rank

Studia Scientiarum Mathematicarum Hungarica
Author: Bertram A. F. Wehrfritz

We study the effect on sections of a soluble-by-finite group G of finite rank of an almost fixed-point-free automorphism φ of G of finite order. We also elucidate the structure of G if φ has order 4 and if G is also (torsion-free)-by-finite. The latter extends recent work of Xu, Zhou and Liu.

Restricted access