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Articles |
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On Farthest
Points in
Fuzzy Normed
Spaces
The main
purpose of
this paper
is to find
t-farthest
points in
fuzzy
normed
spaces. We
introduce
the concept
of
t-remotest
fuzzy sets
and give
some
interesting
theorems. In
particular,
we study the
set of all
t-farthest
points to an
element from
a set and
discuss some
properties
of the this
set.
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M. Ahmadi. Baseri
H. Mazaheri
JJMS,
2019, 12(2),103-114
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Algebraic Properties of λ-Fuzzy Subgroups
In
this
paper,
we
initiate
the
study
of
λ-fuzzy
sets.
We
define
the
notion
of
λ-fuzzy
subgroup
and
prove
that
every
fuzzy
subgroup
is
λ-fuzzy
subgroup.
We
introduce
the
notion
of
λ-fuzzy
cosets
and
establish
their
algebraic
properties.
We
also
initiate
the
study
of
λ-fuzzy
normal
subgroups
and
quotient
group
with
respect
to
λ-fuzzy
normal
subgroup
and
prove
some
of
their
various
group
theoretic
properties.
We
also
investigate
effect
on
the
image
and
inverse
image
of
λ-fuzzy
subgroup
(normal
subgroup)
under
group
homomorphism
and
establish
an
isomorphism
between
the
quotient
group
with
respect
to
λ-fuzzy
normal
subgroup
and
quotient
group
with
respect
to
the
normal
subgroup
G
pλ.
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Umer Shuaib
Waseem
Asghar
JJMS,
2019, 12(2),115-134
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Generalized Fuzzy Slacks-Based Measures of Efficiency and its Applications
Data envelopment analysis (DEA) is a mathematical approach for evaluating the efficiency of decision making units (DMUs). Additionally, slacks-based measures (SBM) of efficiency are used for direct assessment of efficiency in the presence of imprecise data with slack values. Traditional DEA models assume that all input and output data are known exactly. In many situations, however, some inputs and/or outputs take fuzzy data. Fuzzy DEA (FDEA) models emerge as another class of DEA models ...................
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Ali Ashrafi
Mozhgan
Mansouri
Kaleibar
JJMS,
2019, 12(2),135-149
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Complex Fuzzy and Generalized Complex Fuzzy Subpolygroups of a Polygroup
The objective of this paper is to combine the innovative concept of
complex fuzzy sets and polygroups. We introduce the concepts of complex fuzzy subpolyrgroups and generalized complex fuzzy subpolyrgroups of a polygroup. We provide some examples and properties of them.
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M. Al Tahan
B. Davvaz
JJMS, 2019,
12(2),151-173
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On the Dual of Weakly Prime and Semiprime Modules
The weakly second modules (the dual of weakly prime modules) was introduced in [6]. In this paper we introduce and study the semisecond and strongly second modules. Let R be a ring and M be an R-module. We show that M is semisecond if and only if MI = MI2 for any ideal I of R. It is shown that every sum of the second submodules of M is a semisecond submodule of M. Also if M is an Artinian module, then M has only a finite number of maximal semisecond submodules. We prove that every strongly ...................
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R.
Beyranvand
JJMS, 2019,
12(2),175-190
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Weighted Estimates for Two Kinds of Toeplitz Operators
In this paper, we establish the boundedness of a class of Toeplitz operators related to strongly singular Calderon-Zygmund operators and weighted BMO functions on weighted Morrey spaces. Moreover, the boundedness of another kind of Toeplitz operators related to strongly singular Calderon-Zygmund operators and weighted Lipschitz functions on weighted Morrey spaces is also obtained.
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Zhe Cui
Yan Lin
JJMS, 2019,
12(2),191-209
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Compact
Composition
Operators on
Model Spaces
with
Univalent
Symbols
We give a
sufficient
condition
and a
necessary
condition
for the
compactness
of the
composition
operators on
model spaces
Cφ : Kθ →
H2, where φ
is
univalent.
This is a
generalization
to a result
of Shapiro
for the
composition
operator Cφ
: H2 → H2,
[11]. |
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Muath Karaki
JJMS, 2019,
12(2),211-217
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Some
Hermite-Hadamard
Type
Inequaliyies
for
Functions
whose
Derivatives
are
Quasi-Convex
In this
paper, we
establish
new
Hermite-Hadamard's
inequalities
using a new
identity for
parameter
functions
via
quasi-convexity.
Several
known
results are
derived.
Applications
to special
means are
also given. |
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B. Meftah
M. Merad
A. Souahi
JJMS, 2019,
12(2),219-231
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Restricted
Hom-Lie
Superalgebras
The aim of
this paper
is to
introduce
the notion
of
restricted
Hom-Lie
superalgebras.
This class
of algebras
is a
generalization
of both
restricted
Hom-Lie
algebras and
restricted
Lie
superalgebras.
In this
paper, we
present a
way to
obtain
restricted
Hom-Lie
superalgebras
from the
classical
restricted
Lie
superalgebras
along with
algebra
endomorphisms.
Homomorphisms
relations
between
restricted
Hom-Lie
superalgebras
are defined
and studied.
Also, we
obtain some
properties
of p-maps
and
restrictable
Hom-Lie
superalgebras. |
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Shadi
Shaqaqha
JJMS, 2019,
12(2),233-252
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A
Zero-Truncated
Poisson-Aradhana
Distribution
with
Applications
In this
paper, a
zero-truncation
of Poisson-Aradhana
distribution
proposed by
Shanker
(2017) named
‘zero-truncated
Poisson-Aradhana
distribution’
has been
introduced
and
investigated.
A general
expression
for the r th
factorial
moment about
origin has
been
obtained and
thus the
first four
moments
about origin
and the
central
moments have
been given.
Also, the
expressions
for
coefficient
of
variation,
skewness,
kurtosis,
and the
index of
dispersion
of the
distribution
have been
presented
............. |
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Rama Shanker
Kamlesh
Kumar Shukla
JJMS, 2019,
12(2),253-263
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