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Latest Issue

Volume 14, No. 1, March 2021




Approximative Reconstruction Property in Banach

Casazza and Christensen in [5] introduced and studied the reconstruction property in Banach spaces. In this paper, we defined approximative reconstruction property (ARP) in a Banach space and give examples for the existence of ARP. A necessary and sufficient condition for a Banach space to have an approximative reconstruction property is given. Finally, we give some Paley-Wiener type perturbations results concerning the approximative reconstruction property in Banach spaces.


Chander Shekhar

G. S. Rathore



JJMS, 2021, 14(1),1-15

On the Norms of some Special Matrices with Padovan and Pell-Padovan-Like Sequence

The focus of this paper is to define some special matrices like r−circulant, circulant, semi-circulant, Hankel and Toeplitz matrices with the help of integer sequences. In particular, this work is focusing on obtaining norms of the afore mentioned types of matrices that are involved with Pell-Padovan-like sequences.
Furthermore, the upper and lower bounds of spectral norms of those matrices have been also determined.


Zahid Raza
M. S. Bataineh
M. Asim Ali



JJMS, 2021, 14(1),17-41

Some New Results on Controllability and Observability for Impulsive Dynamic Systems

This paper introduces a new transition matrix for impulsive dynamic
systems on time scales and establishes some properties of them for the study of the controllability and observability of such systems.


Safia Mirza
Awais Younus
Asif Mansoor


JJMS, 2021, 14(1),43-72

A New View on Fuzzy F*-Structure Homotopy and its F*-Fundamental Group


In this paper, the concept of fuzzy F*-structure isomorphisms

between F*-fundamental groups are studied. Also it is shown that, for every fuzzy F*-structure continuous function, there is an induced fuzzy F*-structure group homomorphism between their F*-fundamental groups....................


V. Madhuri
B. Amudhambigai



JJMS, 2021, 14(1),73-95

Generalized Distribution Associated with Quasi-Subordination in Terms of Error Function and Bell Numbers

Generalized distribution is a statistical tools used in geometric function
theory in recent time because of its application to real life problems. In this present work, the generalized distribution associated with quasi-subordination in terms of error function and bell numbers were studied. The first few coefficient bounds were obtained which are used to obtain the Fekete-Szegö inequality.



S. O. Olatunji
Ş. Altinkaya




JJMS, 2021, 14(1),97-109

Some Special Features of Relative Intuitionistic Dynamical Systems

This study has investigated the properties of the relative intuitionistic
dynamical systems, and a series of essential properties, including (αβ,(µ, ν))−hole, (µ, ν)αβ−minimal, and (µ, ν)αβ−transitive, are introduced and examined. In this paper, it has also been specified in which conditions the relative intuitionistic dynamical system is an invariant system. Finally, an example of the relative intuitionistic dynamical system is presented, and its topologic properties are analyzed.


Zahra Eslami Giski



JJMS, 2021, 14(1),111-125

Generalized Laguerre Polynomial Bounds for Subclass of Bi-Univalent Functions

In the present paper, we propose to introduce a new subclass of

bi-univalent analytic functions TΣ(λ, γ) (0 < λ ≤ 1, γ ≥ 0) which is defined by making use of the generalized Laguerre polynomials in the open unit disk ∇. We derive upper bounds for the coefficients |a2|, |a3| and discuss Fekete-Szegö problem for the functions belonging to the new introduced class TΣ(λ, γ).


Trailokya Panigrahi
Janusz Sokol




JJMS, 2021, 14(1),127-140


Existence and Uniqueness Results for a Class of Nonlinear Fractional Differential Equations with Nonlocal Boundary Conditions

In this paper, we study the existence and uniqueness of solutions
for fractional differential equations with fractional integral and Caputo fractional derivatives in boundary conditions. Our analysis relies on the Banach contraction principle, Schauder fixed point theorem and Krasnoselskii’s fixed point theorem.
Examples are provided to illustrate the main results.


Choukri Derbazi
Hadda Hammouche


JJMS, 2021, 14(1),141-162


Exact Bahadur Slope for Combining Independent Tests in Case of Laplace Distribution

Combining n independent tests of simple hypothesis, vs one-tailed

alternative as n approaches infinity, in case of Laplace distribution

L(γ, 1) is proposed.
Four free-distribution ”nonparametric” combination procedures namely; Fisher, logistic, sum of P-values and inverse normal were studied. Several comparisons among the four procedures using the exact Bahadur’s slopes were obtained. Results showed that the sum of p-values procedure is better than all other procedures under the null
hypothesis, and the inverse normal procedure is better than the other procedures under the alternative hypothesis.



Abedel-Qader S. Al-Masri



JJMS, 2021, 14(1),163-176


Geometry of Contact CR-Warped Product Submanifolds on Nearly Cosymplectic Manifolds

In this paper, we study contact CR-warped products submanifolds on nearly cosymplectic manifolds. We work out the characterizations in terms of tensor fields under which a contact CR-submanifold of a nearly cosymplectic manifold reduces to a warped product submanifold. In the beginning, we obtain some theorems and lemmas and then develop the general sharp inequalities for squared norm of the second fundamental form on nearly cosymplectic manifolds.

  Santu Dey
Sampa Pahan


JJMS, 2021, 14(1),177-196