Research in Mathematics, Volume 2, Issue 1 (2015)

Browse this journal
Sample our Mathematics & Statistics journals, sign in here to start your FREE access for 14 days

Cogent Mathematics, Volume 2, Issue 1 (2015)

See all volumes and issues
Vol 11, 2024 Vol 10, 2023 Vol 9, 2022 Vol 8, 2021 Vol 7, 2020 Vol 6, 2019 Vol 5, 2018 Vol 4, 2017 Vol 3, 2016 Volume 2, 2015 Vol 1, 2014
Download citations Download PDFs

Research Article

Article
Some covariance inequalities for non-monotonic functions with applications to mean-variance indifference curves and bank hedging
Martín Egozcue
Article: 991082
Published online: 12 Jan 2015
AbstractforSome covariance inequalities for non-monotonic functions with applications to mean-variance indifference curves and bank hedging | Full Text | References | PDF (1.2 MB)
  • 2425 Views
  • 4 CrossRef citations
  • 0Altmetric
Open Access
Article
Sharp bounds for the Neuman-Sándor mean in terms of the power and contraharmonic means
Wei-Dong Jiang & Feng Qi
Article: 995951
Published online: 09 Jan 2015
AbstractforSharp bounds for the Neuman-Sándor mean in terms of the power and contraharmonic means | Full Text | References | PDF (892.6 KB)
  • 900 Views
  • 5 CrossRef citations
  • 0Altmetric
Open Access
Article
Initial value problem of fractional order
A. Guezane-Lakoud
Article: 1004797
Published online: 20 Jan 2015
AbstractforInitial value problem of fractional order | Full Text | References | PDF (648.1 KB)
  • 2229 Views
  • 4 CrossRef citations
  • 0Altmetric
Open Access
Article
Boundedness on Orlicz space of Toeplitz type operators related to multiplier operator and mean oscillation
Ouyang Difei
Article: 1004229
Published online: 21 Jan 2015
AbstractforBoundedness on Orlicz space of Toeplitz type operators related to multiplier operator and mean oscillation | Full Text | References | PDF (828 KB)
  • 767 Views
  • 0 CrossRef citations
  • 0Altmetric
Open Access
Article
The properties of the geometric-Poisson exponentially weighted moving control chart with estimated parameters
Aamir Saghir, Zhengyan Lin & Ching-Wen Chen
Article: 992381
Published online: 21 Jan 2015
AbstractforThe properties of the geometric-Poisson exponentially weighted moving control chart with estimated parameters | Full Text | References | PDF (623.5 KB)
  • 1627 Views
  • 6 CrossRef citations
  • 0Altmetric
Open Access
Article
Strong (skew) ξ-Lie commutativity preserving maps on algebras
Lin Gong, Xiaofei Qi, Jie Shao & Feifei Zhang
Article: 1003175
Published online: 17 Feb 2015
AbstractforStrong (skew) ξ-Lie commutativity preserving maps on algebras | Full Text | References | PDF (828 KB)
  • 1052 Views
  • 1 CrossRef citations
  • 0Altmetric
Open Access
Article
Fuzzy bi-criteria scheduling on parallel machines involving weighted flow time and maximum tardiness
Kewal Krishan Nailwal, Deepak Gupta & Sameer Sharma
Article: 1019792
Published online: 03 Mar 2015
AbstractforFuzzy bi-criteria scheduling on parallel machines involving weighted flow time and maximum tardiness | Full Text | References | PDF (519.1 KB)
  • 938 Views
  • 2 CrossRef citations
  • 0Altmetric
Open Access
Article
On analytical and numerical study of implicit fixed point iterations
Renu Chugh, Preety Malik & Vivek Kumar
Article: 1021623
Published online: 13 Mar 2015
AbstractforOn analytical and numerical study of implicit fixed point iterations | Full Text | References | PDF (692.5 KB)
  • 1230 Views
  • 3 CrossRef citations
  • 0Altmetric
Open Access
Article
Dynamics of asymmetric intraguild predation with time lags in reproduction and maturation
Joydeb Bhattacharyya & Samares Pal
Article: 1021604
Published online: 16 Mar 2015
AbstractforDynamics of asymmetric intraguild predation with time lags in reproduction and maturation | Full Text | References | PDF (5 MB)
  • 739 Views
  • 2 CrossRef citations
  • 0Altmetric
Open Access
Article
The plastic number and its generalized polynomial
Vasileios Iliopoulos
Article: 1023123
Published online: 20 Mar 2015
AbstractforThe plastic number and its generalized polynomial | Full Text | References | PDF (598.9 KB)
  • 2401 Views
  • 2 CrossRef citations
  • 0Altmetric
Open Access
Article
Two-sided bounds on the mean vector and covariance matrix in linear stochastically excited vibration systems with application of the differential calculus of norms
Ludwig Kohaupt
Article: 1021603
Published online: 20 Mar 2015
AbstractforTwo-sided bounds on the mean vector and covariance matrix in linear stochastically excited vibration systems with application of the differential calculus of norms | Full Text | References | PDF (1.5 MB)
  • 647 Views
  • 1 CrossRef citations
  • 0Altmetric
Open Access
Article
On the Bayesianity of minimum risk equivariant estimator for location or scale parameters under a general convex and invariant loss function
Amir T. Payandeh Najafabadi
Article: 1023670
Published online: 17 Mar 2015
AbstractforOn the Bayesianity of minimum risk equivariant estimator for location or scale parameters under a general convex and invariant loss function | Full Text | References | PDF (749.4 KB)
  • 1209 Views
  • 0 CrossRef citations
  • 0Altmetric
Open Access
Article
Approximating positive solutions of nonlinear first order ordinary quadratic differential equations
Bapurao C. Dhage & Shyam B. Dhage
Article: 1023671
Published online: 20 Mar 2015
AbstractforApproximating positive solutions of nonlinear first order ordinary quadratic differential equations | Full Text | References | PDF (979.6 KB)
  • 1201 Views
  • 8 CrossRef citations
  • 0Altmetric
Open Access
Article
On quadratic Gauss sums and variations thereof
M.L. Glasser & Michael Milgram
Article: 1021187
Published online: 24 Mar 2015
AbstractforOn quadratic Gauss sums and variations thereof | Full Text | References | PDF (836.7 KB)
  • 1206 Views
  • 1 CrossRef citations
  • 0Altmetric
Open Access
Article
Assessing the impact of homelessness on HIV/AIDS transmission dynamics
C.P. Bhunu
Article: 1021602
Published online: 24 Mar 2015
AbstractforAssessing the impact of homelessness on HIV/AIDS transmission dynamics | Full Text | References | PDF (946.5 KB)
  • 3291 Views
  • 7 CrossRef citations
  • 0Altmetric
Open Access
Article
Attractor and self-similar group of generalized fuzzy contraction mapping in fuzzy metric space
R. Uthayakumar & A. Gowrisankar
Article: 1024579
Published online: 27 Mar 2015
AbstractforAttractor and self-similar group of generalized fuzzy contraction mapping in fuzzy metric space | Full Text | References | PDF (1.1 MB)
  • 950 Views
  • 0 CrossRef citations
  • 0Altmetric
Open Access
Article
Reflection principle for classical solutions of the homogeneous real Monge–Ampère equation
Mika Koskenoja
Article: 1024993
Published online: 14 Apr 2015
AbstractforReflection principle for classical solutions of the homogeneous real Monge–Ampère equation | Full Text | References | PDF (1.5 MB)
  • 958 Views
  • 0 CrossRef citations
  • 0Altmetric
Open Access
Article
Integral inequalities of Hermite–Hadamard type for logarithmically h-preinvex functions
Muhammad Aslam Noor, Khalida Inayat Noor, Muhammad Uzair Awan & Feng Qi
Article: 1035856
Published online: 28 Apr 2015
AbstractforIntegral inequalities of Hermite–Hadamard type for logarithmically h-preinvex functions | Full Text | References | PDF (1 MB)
  • 1599 Views
  • 2 CrossRef citations
  • 0Altmetric
Open Access
Article
Local convergence for deformed Chebyshev-type method in Banach space under weak conditions
Ioannis K. Argyros & Santhosh George
Article: 1036958
Published online: 28 Apr 2015
AbstractforLocal convergence for deformed Chebyshev-type method in Banach space under weak conditions | Full Text | References | PDF (807.7 KB)
  • 679 Views
  • 6 CrossRef citations
  • 0Altmetric
Open Access
Article
On I-convergent sequence spaces defined by a compact operator and a modulus function
Vakeel A. Khan, Mohd Shafiq & Rami Kamel Ahmad Rababah
Article: 1036509
Published online: 20 May 2015
AbstractforOn I-convergent sequence spaces defined by a compact operator and a modulus function | Full Text | References | PDF (1.1 MB)
  • 928 Views
  • 0 CrossRef citations
  • 0Altmetric
Open Access
Article
Numerical approximations of Sturm–Liouville eigenvalues using Chebyshev polynomial expansions method
Uğur Yücel
Article: 1045223
Published online: 22 May 2015
AbstractforNumerical approximations of Sturm–Liouville eigenvalues using Chebyshev polynomial expansions method | Full Text | References | PDF (685.7 KB)
  • 2839 Views
  • 1 CrossRef citations
  • 0Altmetric
Open Access
Article
An asymptotic analysis for an integrable variant of the Lotka–Volterra prey–predator model via a determinant expansion technique
Masato Shinjo, Masashi Iwasaki, Akiko Fukuda, Emiko Ishiwata, Yusaku Yamamoto & Yoshimasa Nakamura
Article: 1046538
Published online: 03 Jun 2015
AbstractforAn asymptotic analysis for an integrable variant of the Lotka–Volterra prey–predator model via a determinant expansion technique | Full Text | References | PDF (1.1 MB)
  • 680 Views
  • 3 CrossRef citations
  • 0Altmetric
Open Access
Article
A generalised likelihood uncertainty estimation mixed-integer programming model: Application to a water resource distribution network
Godfrey Chagwiza, Brian C. Jones, Senelani D. Hove-Musekwa & Sobona Mtisi
Article: 1048076
Published online: 03 Jun 2015
AbstractforA generalised likelihood uncertainty estimation mixed-integer programming model: Application to a water resource distribution network | Full Text | References | PDF (1 MB)
  • 996 Views
  • 0 CrossRef citations
  • 0Altmetric
Open Access
Article
Block-pulse functions approach to numerical solution of Abel’s integral equation
Monireh Nosrati Sahlan, Hamid Reza Marasi & Farzaneh Ghahramani
Article: 1047111
Published online: 10 Jun 2015
AbstractforBlock-pulse functions approach to numerical solution of Abel’s integral equation | Full Text | References | PDF (634 KB)
  • 1347 Views
  • 8 CrossRef citations
  • 0Altmetric
Open Access
Article
Dissipativity and passivity analysis for discrete-time complex-valued neural networks with time-varying delay
G. Nagamani & S. Ramasamy
Article: 1048580
Published online: 10 Jun 2015
AbstractforDissipativity and passivity analysis for discrete-time complex-valued neural networks with time-varying delay | Full Text | References | PDF (820.2 KB)
  • 816 Views
  • 9 CrossRef citations
  • 0Altmetric
Open Access
Article
Effect of viscous dissipation on hydromagnetic fluid flow and heat transfer of nanofluid over an exponentially stretching sheet with fluid-particle suspension
M.R. Krishnamurthy, B.C. Prasannakumara, B.J. Gireesha & Rama S.R. Gorla
Article: 1050973
Published online: 10 Jun 2015
AbstractforEffect of viscous dissipation on hydromagnetic fluid flow and heat transfer of nanofluid over an exponentially stretching sheet with fluid-particle suspension | Full Text | References | PDF (1.1 MB)
  • 3163 Views
  • 43 CrossRef citations
  • 0Altmetric
Open Access
Article
Fixed point theorems using control function in fuzzy metric spaces
Vishal Gupta, R.K. Saini, Naveen Mani & Adesh Kumar Tripathi
Article: 1053173
Published online: 10 Jun 2015
AbstractforFixed point theorems using control function in fuzzy metric spaces | Full Text | References | PDF (650 KB)
  • 1987 Views
  • 9 CrossRef citations
  • 0Altmetric
Open Access
Article
Matrix ℓ-algebras over ℓ-fields
Jingjing Ma
Article: 1053660
Published online: 15 Jun 2015
AbstractforMatrix ℓ-algebras over ℓ-fields | Full Text | References | PDF (1.4 MB)
  • 627 Views
  • 1 CrossRef citations
  • 0Altmetric
Open Access
Article
Response surface designs using the generalized variance inflation factors
Diarmuid O’Driscoll & Donald E. Ramirez
Article: 1053728
Published online: 14 Jun 2015
AbstractforResponse surface designs using the generalized variance inflation factors | Full Text | References | PDF (850.2 KB)
  • 2178 Views
  • 1 CrossRef citations
  • 0Altmetric
Open Access
Article
A combination of genetic algorithm and particle swarm optimization method for solving traveling salesman problem
Keivan Borna & Razieh Khezri
Article: 1048581
Published online: 18 Jun 2015
AbstractforA combination of genetic algorithm and particle swarm optimization method for solving traveling salesman problem | Full Text | References | PDF (565.2 KB)
  • 4045 Views
  • 7 CrossRef citations
  • 0Altmetric
Open Access
Article
A mathematical analysis of an exchange-traded horse race betting fund with deterministic payoff betting strategy for institutional investment to challenge EMH
Craig George Leslie Hopf & Gurudeo Anand Tularam
Article: 1057370
Published online: 29 Jun 2015
AbstractforA mathematical analysis of an exchange-traded horse race betting fund with deterministic payoff betting strategy for institutional investment to challenge EMH | Full Text | References | PDF (1.5 MB)
  • 7957 Views
  • 0 CrossRef citations
  • 0Altmetric
Open Access
Article
On generalization of an integral inequality and its applications
Ghulam Farid, Sajid Iqbal & Josip Pečarić
Article: 1066528
Published online: 12 Aug 2015
AbstractforOn generalization of an integral inequality and its applications | Full Text | References | PDF (891.9 KB)
  • 1047 Views
  • 2 CrossRef citations
  • 0Altmetric
Open Access
Article
A defense against the alleged unreliability of difference scores
David Trafimow
Article: 1064626
Published online: 17 Jul 2015
AbstractforA defense against the alleged unreliability of difference scores | Full Text | References | PDF (730.3 KB)
  • 5658 Views
  • 52 CrossRef citations
  • 0Altmetric
Open Access
Article
Derivation, f-derivation and generalized derivation of KUS-algebras
Chiranjibe Jana, Tapan Senapati & Madhumangal Pal
Article: 1064602
Published online: 12 Aug 2015
AbstractforDerivation, f-derivation and generalized derivation of KUS-algebras | Full Text | References | PDF (1.1 MB)
  • 1428 Views
  • 6 CrossRef citations
  • 0Altmetric
Open Access
Article
Relative contribution ratio: A quantitative metrics for multi-parameter analysis
Changtong Luo, Zonglin Jiang, Chun Wang & Zongmin Hu
Article: 1068979
Published online: 30 Jul 2015
AbstractforRelative contribution ratio: A quantitative metrics for multi-parameter analysis | Full Text | References | PDF (1.7 MB)
  • 3869 Views
  • 1 CrossRef citations
  • 0Altmetric
Open Access
Article
Injective module based on rough set theory
Arvind Kumar Sinha & Anand Prakash
Article: 1069481
Published online: 27 Jul 2015
AbstractforInjective module based on rough set theory | Full Text | References | PDF (777.1 KB)
  • 847 Views
  • 0 CrossRef citations
  • 0Altmetric
Open Access
Article
MANOVA, LDA, and FA criteria in clusters parameter estimation
Stan Lipovetsky
Article: 1071013
Published online: 10 Aug 2015
AbstractforMANOVA, LDA, and FA criteria in clusters parameter estimation | Full Text | References | PDF (518 KB)
  • 2549 Views
  • 5 CrossRef citations
  • 0Altmetric
Open Access
Article
Dynamics of the interaction of plankton and planktivorous fish with delay
Samares Pal & Anal Chatterjee
Article: 1074337
Published online: 12 Aug 2015
AbstractforDynamics of the interaction of plankton and planktivorous fish with delay | Full Text | References | PDF (1.6 MB)
  • 1063 Views
  • 14 CrossRef citations
  • 0Altmetric
Open Access
Article
A weak approximation for the Wiener–Hopf factorization
Amir T. Payandeh Najafabadi & Dan Z. Kucerovsky
Article: 1074773
Published online: 17 Aug 2015
AbstractforA weak approximation for the Wiener–Hopf factorization | Full Text | References | PDF (840.9 KB)
  • 844 Views
  • 0 CrossRef citations
  • 0Altmetric
Open Access
Article
Minimax-robust filtering of functionals from periodically correlated random fields
Iryna Golichenko, Oleksandr Masyutka & Mikhail Moklyachuk
Article: 1074327
Published online: 17 Aug 2015
AbstractforMinimax-robust filtering of functionals from periodically correlated random fields | Full Text | References | PDF (809.3 KB)
  • 651 Views
  • 1 CrossRef citations
  • 0Altmetric
Open Access
Article
Two dimensional deformation in microstretch thermoelastic half space with microtemperatures and internal heat source
Praveen Ailawalia, Sunil Kumar Sachdeva & Devinder Pathania
Article: 1086293
Published online: 14 Sep 2015
AbstractforTwo dimensional deformation in microstretch thermoelastic half space with microtemperatures and internal heat source | Full Text | References | PDF (921.3 KB)
  • 774 Views
  • 1 CrossRef citations
  • 0Altmetric
Open Access
Article
An algorithm for variational inequalities with equilibrium and fixed point constraints
Bui Van Dinh
Article: 1088176
Published online: 23 Sep 2015
AbstractforAn algorithm for variational inequalities with equilibrium and fixed point constraints | Full Text | References | PDF (1.3 MB)
  • 749 Views
  • 0 CrossRef citations
  • 0Altmetric
Open Access
Article
Modelling the effects of sexting on the transmission dynamics of HSV-2 amongst adolescents
A. Mhlanga, C.P. Bhunu & S. Mushayabasa
Article: 1085940
Published online: 23 Sep 2015
AbstractforModelling the effects of sexting on the transmission dynamics of HSV-2 amongst adolescents | Full Text | References | PDF (1.2 MB)
  • 1120 Views
  • 1 CrossRef citations
  • 0Altmetric
Open Access
Article
Some new Hermite–Hadamard type inequalities for differentiable co-ordinated convex functions
Xu-Yang Guo, Feng Qi & Bo-Yan Xi
Article: 1092195
Published online: 01 Oct 2015
AbstractforSome new Hermite–Hadamard type inequalities for differentiable co-ordinated convex functions | Full Text | References | PDF (792.1 KB)
  • 581 Views
  • 1 CrossRef citations
  • 0Altmetric
Open Access
Article
Some new higher separation axioms via sets having non-empty interior
Pratibha Bhat & Ananga Kumar Das
Article: 1092695
Published online: 02 Oct 2015
AbstractforSome new higher separation axioms via sets having non-empty interior | Full Text | References | PDF (1.1 MB)
  • 1100 Views
  • 0 CrossRef citations
  • 0Altmetric
Open Access
Article
Iterative solvers for the Maxwell–Stefan diffusion equations: Methods and applications in plasma and particle transport
Jürgen Geiser
Article: 1092913
Published online: 07 Oct 2015
AbstractforIterative solvers for the Maxwell–Stefan diffusion equations: Methods and applications in plasma and particle transport | Full Text | References | PDF (2.4 MB)
  • 1220 Views
  • 6 CrossRef citations
  • 0Altmetric
Open Access
Article
On norm equivalence between the displacement and velocity vectors for free linear dynamical systems
Ludwig Kohaupt
Article: 1095699
Published online: 15 Oct 2015
AbstractforOn norm equivalence between the displacement and velocity vectors for free linear dynamical systems | Full Text | References | PDF (2.1 MB)
  • 492 Views
  • 1 CrossRef citations
  • 0Altmetric
Open Access
Article
Kernel techniques for generalized audio crossfades
William A. Sethares & James A. Bucklew
Article: 1102116
Published online: 25 Oct 2015
AbstractforKernel techniques for generalized audio crossfades | Full Text | References | PDF (1.1 MB)
  • 817 Views
  • 0 CrossRef citations
  • 0Altmetric
Open Access
Article
Approximation properties of modified Szász–Mirakyan operators in polynomial weighted space
Prashantkumar Patel, Vishnu Narayan Mishra & Mediha Örkcü
Article: 1106195
Published online: 29 Oct 2015
AbstractforApproximation properties of modified Szász–Mirakyan operators in polynomial weighted space | Full Text | References | PDF (744.9 KB)
  • 907 Views
  • 0 CrossRef citations
  • 0Altmetric
Open Access
Article
Sum and product theorems depending on the (p, q)-th order and (p, q)-th type of entire functions
H.M. Srivastava, Sanjib Kumar Datta, Tanmay Biswas & Debasmita Dutta
Article: 1107951
Published online: 29 Oct 2015
AbstractforSum and product theorems depending on the (p, q)-th order and (p, q)-th type of entire functions | Full Text | References | PDF (1.1 MB)
  • 895 Views
  • 1 CrossRef citations
  • 0Altmetric
Open Access
Article
SPC methods for time-dependent processes of counts—A literature review
Christian H. Weiß
Article: 1111116
Published online: 05 Nov 2015
AbstractforSPC methods for time-dependent processes of counts—A literature review | Full Text | References | PDF (829.5 KB)
  • 1734 Views
  • 19 CrossRef citations
  • 0Altmetric
Open Access
Article
Minimum-energy wavelet frames generated by the Walsh polynomials
Sunita Goyal & Firdous A. Shah
Article: 1114830
Published online: 27 Nov 2015
AbstractforMinimum-energy wavelet frames generated by the Walsh polynomials | Full Text | References | PDF (1.4 MB)
  • 485 Views
  • 1 CrossRef citations
  • 0Altmetric
Open Access
Article
Nonlinear least squares algorithm for identification of hazards
Robert E. White
Article: 1118219
Published online: 15 Dec 2015
AbstractforNonlinear least squares algorithm for identification of hazards | Full Text | References | PDF (2.1 MB)
  • 502 Views
  • 3 CrossRef citations
  • 0Altmetric
Open Access
Article
Dynamics of the equation in the complex plane
Sk. Sarif Hassan & Esha Chatterjee
Article: 1122276
Published online: 15 Dec 2015
AbstractforDynamics of the equation in the complex plane | Full Text | References | PDF (2.8 MB)
  • 799 Views
  • 0 CrossRef citations
  • 0Altmetric
Open Access
Article
Super edge-magic sequence of maximal outer planer graph and its characteristics
G.S.G.N. Anjaneyulu & A. Vijayabarathi
Article: 1123340
Published online: 14 Dec 2015
AbstractforSuper edge-magic sequence of maximal outer planer graph and its characteristics | Full Text | References | PDF (932.1 KB)
  • 619 Views
  • 0 CrossRef citations
  • 0Altmetric
Open Access

Explore articles

Explore the most recently published articles

Certain bilinear generating relations for q-analogue of I-function
Biniyam Shimelis et al.
Article | Published online: 26 Jul 2024
Open Access
Some Results on Filters and Congruence Relations of Hoops
Gezahagne Mulat Addis et al.
Article | Published online: 22 Jul 2024
Open Access
Hermite–Hadamard type inequality for non-convex functions employing the Caputo–Fabrizio fractional integral
Faisal Yasin et al.
Article | Published online: 26 Jun 2024
Open Access
On characterizations of a Tr− space: Continuity, Domination, and Alliance
Shega Mayila et al.
Article | Published online: 24 Jun 2024
Open Access