International Journal of Mathematics and Mathematical Sciences
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The latest articles from Hindawi Publishing Corporation
© 2016 , Hindawi Publishing Corporation . All rights reserved.

Existence Results for Some Equilibrium Problems Involving Monotone Bifunction
Wed, 03 Feb 2016 13:20:03 +0000
http://www.hindawi.com/journals/ijmms/2016/2093026/
This paper deals with some existence results of equilibrium problems on convex and closed sets (either bounded or unbounded) in Banach spaces. Moreover, an application to the existence of solution for a differential inclusion is given.
Ayed E. Hashoosh, Mohsen Alimohammady, and M. K. Kalleji
Copyright © 2016 Ayed E. Hashoosh et al. All rights reserved.

On Graphs of the Cone Decompositions for the MinCut and MaxCut Problems
Mon, 01 Feb 2016 14:02:35 +0000
http://www.hindawi.com/journals/ijmms/2016/7863650/
We consider maximum and minimum cut problems with nonnegative weights of edges. We define the graphs of the cone decompositions and find a linear clique number for the mincut problem and a superpolynomial clique number for the maxcut problem. These values characterize the time complexity in a broad class of algorithms based on linear comparisons.
Vladimir Bondarenko and Andrei Nikolaev
Copyright © 2016 Vladimir Bondarenko and Andrei Nikolaev. All rights reserved.

Characterizations of Regular Ordered Semirings by Ordered QuasiIdeals
Mon, 18 Jan 2016 06:44:38 +0000
http://www.hindawi.com/journals/ijmms/2016/4272451/
We introduce the notion of an ordered quasiideal of an ordered semiring and show that ordered quasiideals and ordered biideals coincide in regular ordered semirings. Then we give characterizations of regular ordered semirings, regular ordered duosemirings, and left (right) regular ordered semirings by their ordered quasiideals.
Pakorn Palakawong na Ayutthaya and Bundit Pibaljommee
Copyright © 2016 Pakorn Palakawong na Ayutthaya and Bundit Pibaljommee. All rights reserved.

Homotopic Chain Maps Have Equal Homology and Homology
Tue, 05 Jan 2016 13:18:53 +0000
http://www.hindawi.com/journals/ijmms/2016/5647548/
The homotopy of chain maps on preabelian categories is investigated and the equality of standard homologies and homologies of homotopic chain maps is established. As a special case, if and are the same homotopy type, then their th homology modules are isomorphic, and if is a contractible space, then its th homology modules for are trivial.
M. Z. KazemiBaneh
Copyright © 2016 M. Z. KazemiBaneh. All rights reserved.

Digit Benford Converges to Benford
Tue, 29 Dec 2015 12:46:24 +0000
http://www.hindawi.com/journals/ijmms/2015/123816/
Using the sum invariance property of Benford random variables, we prove that an digit Benford variable converges to a Benford variable as approaches infinity.
Azar Khosravani and Constantin Rasinariu
Copyright © 2015 Azar Khosravani and Constantin Rasinariu. All rights reserved.

Metrics on the Sets of Nonsupersingular Elliptic Curves in Simplified Weierstrass Form over Finite Fields of Characteristic Two
Mon, 28 Dec 2015 12:43:18 +0000
http://www.hindawi.com/journals/ijmms/2015/597849/
Elliptic curves have a wide variety of applications in computational number theory such as elliptic curve cryptography, pairing based cryptography, primality tests, and integer factorization. Mishra and Gupta (2008) have found an interesting property of the sets of elliptic curves in simplified Weierstrass form (or short Weierstrass form) over prime fields. The property is that one can induce metrics on the sets of elliptic curves in simplified Weierstrass form over prime fields of characteristic greater than three. Later, Vetro (2011) has found some other metrics on the sets of elliptic curves in simplified Weierstrass form over prime fields of characteristic greater than three. However, to our knowledge, no analogous result is known in the characteristic two case. In this paper, we will prove that one can induce metrics on the sets of nonsupersingular elliptic curves in simplified Weierstrass form over finite fields of characteristic two.
Keisuke Hakuta
Copyright © 2015 Keisuke Hakuta. All rights reserved.

On Generalized Semiderivations of Prime Near Rings
Sun, 08 Nov 2015 06:43:00 +0000
http://www.hindawi.com/journals/ijmms/2015/867923/
Let be a near ring. An additive mapping is said to be a generalized semiderivation on if there exists a semiderivation associated with a function such that and for all . In this paper we prove that prime near rings satisfying identities involving semiderivations are commutative rings, thereby extending some known results on derivations, semiderivations, and generalized derivations. We also prove that there exist no nontrivial generalized semiderivations which act as a homomorphism or as an antihomomorphism on a 3prime near ring .
Abdelkarim Boua, A. Raji, Asma Ali, and Farhat Ali
Copyright © 2015 Abdelkarim Boua et al. All rights reserved.

Certain Bound for Starlike and Convex Functions with respect to Symmetric Points
Thu, 29 Oct 2015 07:54:58 +0000
http://www.hindawi.com/journals/ijmms/2015/205682/
The aim of this paper is to establish the coefficient estimates for the subclasses of starlike and convex functions with respect to symmetric points involving difference operator. Also certain applications based on these results for subclasses of univalent functions defined by convolution are given.
C. Ramachandran, D. Kavitha, and T. Soupramanien
Copyright © 2015 C. Ramachandran et al. All rights reserved.

The Hankel Transform of Noncentral Bell Numbers
Wed, 28 Oct 2015 07:28:59 +0000
http://www.hindawi.com/journals/ijmms/2015/417327/
We define two forms of analogue of noncentral Stirling numbers of the second kind and obtain some properties parallel to those of noncentral Stirling numbers. Certain combinatorial interpretation is given for the second form of the analogue in the context of 01 tableaux which, consequently, yields certain additive identity and some convolutiontype formulas. Finally, a analogue of noncentral Bell numbers is defined and its Hankel transform is established.
Cristina B. Corcino, Roberto B. Corcino, Jay M. Ontolan, Charrymae M. PerezFernandez, and Ednelyn R. Cantallopez
Copyright © 2015 Cristina B. Corcino et al. All rights reserved.

Recent Trends in Special Numbers and Special Functions and Polynomials
Tue, 20 Oct 2015 06:27:02 +0000
http://www.hindawi.com/journals/ijmms/2015/573893/
Serkan Araci, Mehmet Acikgoz, Cenap Özel, H. M. Srivastava, and Toka Diagana
Copyright © 2015 Serkan Araci et al. All rights reserved.

The Peak of Noncentral Stirling Numbers of the First Kind
Mon, 12 Oct 2015 08:26:59 +0000
http://www.hindawi.com/journals/ijmms/2015/982812/
We locate the peak of the distribution of noncentral Stirling numbers of the first kind
by determining the value of the index corresponding to the maximum value of the distribution.
Roberto B. Corcino, Cristina B. Corcino, and Peter John B. Aranas
Copyright © 2015 Roberto B. Corcino et al. All rights reserved.

A DomainSpecific Architecture for Elementary Function Evaluation
Sun, 11 Oct 2015 11:36:15 +0000
http://www.hindawi.com/journals/ijmms/2015/843851/
We propose a DomainSpecific Architecture for elementary function computation to improve throughput while reducing power consumption as a model for more general applications: support finegrained parallelism by eliminating branches, and eliminate the duplication required by coprocessors by decomposing computation into instructions which fit existing pipelined execution models and standard register files. Our example instruction architecture (ISA) extension supports scalar and vector/SIMD implementations of tablebased methods of calculating all common special functions, with the aim of improving throughput by (1) eliminating the need for tables in memory, (2) eliminating all branches for special cases, and (3) reducing the total number of instructions. Two new instructions are required, a table lookup instruction and an extendedprecision floatingpoint multiplyadd instruction with special treatment for exceptional inputs. To estimate the performance impact of these instructions, we implemented them in a modified Cell/B.E. SPU simulator and observed an average throughput improvement of 2.5 times for optimized loops mapping single functions over long vectors.
Anuroop Sharma and Christopher Kumar Anand
Copyright © 2015 Anuroop Sharma and Christopher Kumar Anand. All rights reserved.

Explicit Formulas for Meixner Polynomials
Sun, 11 Oct 2015 09:51:32 +0000
http://www.hindawi.com/journals/ijmms/2015/620569/
Using notions of composita and composition of generating functions, we show an easy way to obtain explicit formulas for some current polynomials. Particularly, we consider the Meixner polynomials of the first and second kinds.
Dmitry V. Kruchinin and Yuriy V. Shablya
Copyright © 2015 Dmitry V. Kruchinin and Yuriy V. Shablya. All rights reserved.

Analytic Solutions of a SecondOrder Functional Differential Equation with a State Derivative Dependent Delay
Mon, 05 Oct 2015 12:25:29 +0000
http://www.hindawi.com/journals/ijmms/2015/904679/
We investigate an analytic solution of the secondorder differential equation with a state derivative dependent delay of the form . Considering a convergent power series of an auxiliary equation with the relation , we obtain an analytic solution . Furthermore, we characterize a polynomial solution when is a polynomial.
Jiraphorn Somsuwan and Keaitsuda Maneeruk Nakprasit
Copyright © 2015 Jiraphorn Somsuwan and Keaitsuda Maneeruk Nakprasit. All rights reserved.

Faber Polynomial Coefficients of Classes of Meromorphic Bistarlike Functions
Sun, 04 Oct 2015 09:08:38 +0000
http://www.hindawi.com/journals/ijmms/2015/161723/
Applying the Faber polynomial coefficient expansions to certain classes of meromorphic bistarlike functions,
we demonstrate the unpredictability of their early coefficients and also obtain general coefficient estimates for
such functions subject to a given gap series condition. Our results improve some of the coefficient bounds
published earlier.
Jay M. Jahangiri and Samaneh G. Hamidi
Copyright © 2015 Jay M. Jahangiri and Samaneh G. Hamidi. All rights reserved.

Generalized Lacunary Statistical Difference Sequence Spaces of Fractional Order
Sun, 04 Oct 2015 08:50:49 +0000
http://www.hindawi.com/journals/ijmms/2015/984283/
We generalize the lacunary statistical convergence by introducing the generalized difference operator of fractional order, where is a proper fraction and is any fixed sequence of nonzero real or complex numbers. We study some properties of this operator and investigate the topological structures of related sequence spaces. Furthermore, we introduce some properties of the strongly Cesaro difference sequence spaces of fractional order involving lacunary sequences and examine various inclusion relations of these spaces. We also determine the relationship between lacunary statistical and strong Cesaro difference sequence spaces of fractional order.
Ugur Kadak
Copyright © 2015 Ugur Kadak. All rights reserved.

Green’s Function for a Slice of the Korányi Ball in the Heisenberg Group
Sun, 04 Oct 2015 06:18:11 +0000
http://www.hindawi.com/journals/ijmms/2015/460461/
We give a representation formula for solution of the inhomogeneous Dirichlet problem on the upper half Korányi ball and for the slice of the Korányi ball in the Heisenberg group by obtaining explicit expressions of Greenlike kernel when the given data has certain radial symmetry.
Shivani Dubey, Ajay Kumar, and Mukund Madhav Mishra
Copyright © 2015 Shivani Dubey et al. All rights reserved.

On the Local Minima of the Order of Appearance Function
Thu, 01 Oct 2015 16:11:41 +0000
http://www.hindawi.com/journals/ijmms/2015/823973/
The order of appearance of the positive integer is the smallest positive integer such that divides , the th member of the Fibonacci sequence. In this paper, we improve upon some results from (Marques, 2011) concerning local minima of .
Florian Luca and Thato Mosima
Copyright © 2015 Florian Luca and Thato Mosima. All rights reserved.

Fuzzy Fold Filters of Pseudoresiduated Lattices
Thu, 01 Oct 2015 08:28:37 +0000
http://www.hindawi.com/journals/ijmms/2015/386210/
Given a pseudoresiduated lattice and a lattice , we introduce and characterize the fuzzy versions of different fold implicative (resp., obstinate, Boolean, normal, and extended involutive) filters of . Moreover, we study some relationships between these different types of fuzzy fold filters.
Albert Kadji, Celestin Lele, and Marcel Tonga
Copyright © 2015 Albert Kadji et al. All rights reserved.

A DerivativeFree Conjugate Gradient Method and Its Global Convergence for Solving Symmetric Nonlinear Equations
Thu, 03 Sep 2015 08:56:02 +0000
http://www.hindawi.com/journals/ijmms/2015/961487/
We suggest a conjugate gradient (CG) method for solving symmetric systems of nonlinear equations without computing Jacobian and gradient via the special structure of the underlying function. This derivativefree feature of the proposed method gives it advantage to solve relatively largescale problems (500,000 variables) with lower storage requirement compared to some existing methods. Under appropriate conditions, the global convergence of our method is reported. Numerical results on some benchmark test problems show that the proposed method is practically effective.
Mohammed Yusuf Waziri and Jamilu Sabi’u
Copyright © 2015 Mohammed Yusuf Waziri and Jamilu Sabi’u. All rights reserved.

Certain Properties of Hypergeometric Functions
Thu, 20 Aug 2015 06:37:03 +0000
http://www.hindawi.com/journals/ijmms/2015/489218/
The quotients of certain hypergeometric functions are presented as fractions which converge uniformly in the unit disc. These results lead to the existence of certain hypergeometric functions in the class of either convex functions, , or starlike functions .
Uzoamaka A. Ezeafulukwe and Maslina Darus
Copyright © 2015 Uzoamaka A. Ezeafulukwe and Maslina Darus. All rights reserved.

Some Relations between Admissible Monomials for the Polynomial Algebra
Thu, 13 Aug 2015 16:00:06 +0000
http://www.hindawi.com/journals/ijmms/2015/235806/
Let be the polynomial algebra in variables , of degree one, over the field of two elements. The mod2 Steenrod algebra acts on according to well known rules. A major problem in algebraic topology is of determining , the image of the action of the positively graded part of . We are interested in the related problem of determining a basis for the quotient vector space . has been explicitly calculated for but problems remain for . Both and are graded, where denotes the set of homogeneous polynomials of degree . In this paper, we show that if is an admissible monomial (i.e., meets a criterion to be in a certain basis for ), then, for any pair of integers (), , and , the monomial is admissible. As an application we consider a few cases when .
Mbakiso Fix Mothebe and Lafras Uys
Copyright © 2015 Mbakiso Fix Mothebe and Lafras Uys. All rights reserved.

Real Zeros of a Class of Hyperbolic Polynomials with Random Coefficients
Sun, 09 Aug 2015 14:28:17 +0000
http://www.hindawi.com/journals/ijmms/2015/261370/
We have proved here that the expected number of real zeros of a random hyperbolic polynomial of the form , where is a sequence of standard Gaussian random variables, is . It is shown that the asymptotic value of expected number of times the polynomial crosses the level is also as long as does not exceed , where . The number of oscillations of about will be less than asymptotically only if , where or . In the former case the number of oscillations continues to be a fraction of and decreases with the increase in value of . In the latter case, the number of oscillations reduces to and almost no trace of the curve is expected to be present above the level if log .
Mina Ketan Mahanti, Amandeep Singh, and Lokanath Sahoo
Copyright © 2015 Mina Ketan Mahanti et al. All rights reserved.

Some Applications of New Modified Integral Type Operators
Mon, 03 Aug 2015 13:20:30 +0000
http://www.hindawi.com/journals/ijmms/2015/874178/
We introduce a new sequence of integral operators. We show that it is a weighted
approximation process in the polynomial space of continuous functions defined on unit interval. Weighted
statistical approximation theorem, Korovkin type theorems for fuzzy continuous functions, and an estimate for
the rate of convergence for these operators.
R. P. Pathak and Shiv Kumar Sahoo
Copyright © 2015 R. P. Pathak and Shiv Kumar Sahoo. All rights reserved.

Vehicle Routing Problem for Multiple Product Types, Compartments, and Trips with Soft Time Windows
Wed, 29 Jul 2015 15:59:06 +0000
http://www.hindawi.com/journals/ijmms/2015/126754/
This paper presents a mathematical model to solve the vehicle routing problem with soft time windows (VRPSTW) and distribution of products with multiple categories. In addition, we include multiple compartments and trips. Each compartment is dedicated to a single type of product. Each vehicle is allowed to have more than one trip, as long as it corresponds to the maximum distance allowed in a workday. Numerical results show the effectiveness of our model.
P. Kabcome and T. Mouktonglang
Copyright © 2015 P. Kabcome and T. Mouktonglang. All rights reserved.

Periodic Solutions of Certain Differential Equations with Piecewise Constant Argument
Wed, 15 Jul 2015 06:38:37 +0000
http://www.hindawi.com/journals/ijmms/2015/828952/
Existence criteria are derived for the eventually periodic solutions of a class of differential equations with piecewise constant argument whose solutions at consecutive integers satisfy nonlinear recurrence relations. The proof characterizes the initial values of periodic solutions in terms of the coefficients of the resulting difference equations. Sufficient conditions for the unboundedness, boundedness, and symmetry of general solutions also follow from the corresponding properties of the difference
equations.
James Guyker
Copyright © 2015 James Guyker. All rights reserved.

A Direct Proof of a Theorem concerning Treed Overrings
Wed, 08 Jul 2015 09:42:10 +0000
http://www.hindawi.com/journals/ijmms/2015/938648/
We improve and provide a direct proof of a theorem that answered a question by Dobbs about treed overrings. More precisely, we show that if is an integrally closed local domain and each of its proper overrings is treed, then is a valuation domain or is a PVD with associated valuation overring such that .
Ahmed Ayache
Copyright © 2015 Ahmed Ayache. All rights reserved.

On the Level Set of a Function with Degenerate Minimum Point
Wed, 08 Jul 2015 06:04:22 +0000
http://www.hindawi.com/journals/ijmms/2015/493217/
For , let be an dimensional smooth closed manifold and a smooth function. We set and assume that is attained by unique point such that is a nondegenerate critical point. Then the Morse lemma tells us that if is slightly bigger than , is diffeomorphic to . In this paper, we relax the condition on from being nondegenerate to being an isolated critical point and obtain the same consequence. Some application to the topology of polygon spaces is also included.
Yasuhiko Kamiyama
Copyright © 2015 Yasuhiko Kamiyama. All rights reserved.

On Partial Sum of Tribonacci Numbers
Mon, 15 Jun 2015 13:19:17 +0000
http://www.hindawi.com/journals/ijmms/2015/301814/
We study the sum of step apart Tribonacci numbers for any . We prove that satisfies certain Tribonacci rule with integers , and .
Eunmi Choi and Jiin Jo
Copyright © 2015 Eunmi Choi and Jiin Jo. All rights reserved.

Comparative Study of Generalized QuantitativeQualitative Inaccuracy Fuzzy Measures for Noiseless Coding Theorem and 1:1 Codes
Mon, 15 Jun 2015 06:25:17 +0000
http://www.hindawi.com/journals/ijmms/2015/258675/
In coding theory, we study various properties of codes for application in data compression, cryptography, error correction, and network coding. The study of codes is introduced in Information Theory, electrical engineering, mathematics, and computer sciences for the transmission of data through reliable and efficient methods. We have to consider how coding of messages can be done efficiently so that the maximum number of messages can be sent over a noiseless channel in a given time. Thus, the minimum value of mean codeword length subject to a given constraint on codeword lengths has to be founded. In this paper, we have introduced mean codeword length of order and type for 1:1 codes and analyzed the relationship between average codeword length and fuzzy information measures for binary 1:1 codes. Further, noiseless coding theorem associated with fuzzy information measure has been established.
H. D. Arora and Anjali Dhiman
Copyright © 2015 H. D. Arora and Anjali Dhiman. All rights reserved.