Latest
Issue
Volume
13, No.
2,
June 2020
Articles 


Chinmayi
Indices of
some Graph
Operations
In this
paper, we
investigate
the
mathematical
properties
of a set of
new novel
topological
indices
named as
Chinmayi
indices. We
obtain
closed
formulae for
Chinmayi
indices of
some class
of graphs.
Further, we
obtain first
Chinmayi
index of
some graph
operations
viz.,
Cartesian
product,
composition,
tensor
product, and
corona
product of
two graphs.
Lastly, as
an
application
of graph
operations,
we derive
explicit
formulae for
some
chemically
important
structures
and nano
materials. 

B. Basavanagoud
Anand P. Barangi
JJMS,
2020, 13(2),169187

Remarks on Abstract Subdifferential
In
this
paper,
the
notion
of
subdifferential
is
extended
in
the
framework
of
abstract
convexity
and
some
basic
properties
of
this
new
concept
is
considered.
Also,
a
representation
based
on
maximal
elements
is
given.
Our
results
is
supported
by
some
examples.


Zakieh
Farabi
Mohsen
Alimohammady
Mehdi Roohi
JJMS,
2020, 13(2),189202

Generalized Complex Space Forms
In this paper, we find an eigen value of Ricci operator corresponding
to scalar curvature r of a generalized complex space form and we give conditions for the existence of a generalized complex space form.


Uppara
Manjulamma
Nagaraja H.
G.
Kiran Kumar
D. L.
JJMS,
2020, 13(2),203219

3Divisor Cordial Labeling of some Join Graphs
Let G be a (p; q) graph and 2 ≤ k ≤ p. Let f : V (G) → {1; 2; : : : ; k}
be a map. For each edge uv, assign the label 1 if either f(u) or f(v) divides the other and 0 otherwise. f is called a kdivisor cordial labeling...........


S. Sathish
Narayanan
JJMS,
2020, 13(2),221230

Complex Fuzzy Lie Algebras
A complex fuzzy Lie algebra is a fuzzy Lie algebra whose membership
function takes values in the unit circle in the complex plane. In this paper, we define the complex fuzzy Lie subalgebras and complex fuzzy ideals of Lie algebras.
Then, we investigate some of characteristics of complex fuzzy Lie subalgebras. The relationship between complex fuzzy Lie subalgebras and fuzzy Lie subalgebras is also investigated. Finally, we define the image and the inverse image of complex fuzzy Lie subalgebra under Lie algebra homomorphism. The properties of complex fuzzy Lie subalgebras and complex fuzzy ideals under homomorphisms of Lie algebras are studied.


Shadi
Shaqaqha
JJMS,
2020, 13(2),231247

Compatible and Weakly Compatible Maps in a Complex Fuzzy Metric Space
In this paper we introduce the notion of compatibility of self maps
in a complex fuzzy metric space. Using this, we establish some common fixed point theorems employing a generalized contractive condition, which extend and generalize the existing results in fuzzy metric spaces to a complex fuzzy metric space. They also generalize the existing results of Singh et al.[13] in a complex fuzzy metric space.


Shobha Jain
Shishir Jain
JJMS,
2020, 13(2),249267

Cost
Analysis of
Degraded
Machining
System with
Spare,
Common Cause
Failure and
Operating
under
Variable
Service Rate
In this
Paper, we
have studied
the
machining
system with
finite
number of
operating
machines
along with
warm standby
machines
under the
supervision
of R
heterogeneous
repairmen.
The
repairmen
are
servicing
with
variable
service
rate.
Whenever any
machine
fails, it is
immediately
replaced by
available
standby
machine.
Machine may
also fail
due to
common
cause. Once
all the
standbys are
exhausted,
the system
has extra
burden to
share load
of failures
and it
starts to
work under
degraded
mode. It is
assumed
that, the
timetofailure
and
timetoservice
of the
machines
follows the
exponential
distribution.
Steady state
probability
is evaluated
using
recursive
algorithm.
We have
developed a
cost model
to obtain
the optimum
number of
repairmen
and standbys
maintaining
the system
availability
at minimum
specified
level. Under
optimum
operating
conditions,
various
system
performance
measures are
evaluated
and
sensitivity
analysis is
also
performed. 

Praveen
Deora
Dinesh
Chandra
Sharma
Purushottam
Jharotia
JJMS,
2020, 13(2),269285

Transmuted
Aradhana
Distribution:
Properties
and
Application
In this
paper, we
introduce a
new
continuous
distribution
called
transmuted
Aradhana
distribution
(TAD). It is
a
generalization
of Aradhana
distribution
based on the
quadratic
rank
transmutation
map.
Properties
of the
proposed
distribution
including
shape of the
density,
reliability
and hazard
rate
functions,
mean
residual
life
function,
rth moment,
moment
generating
function,
order
statistics,
Renyi
entropy,
quantile
function,
are
explored. We
use maximum
likelihood
method
and method
of moments
to estimate
the
parameters
of the TAD.
We present
an
application
to real life
data set to
illustrate
the
usefulness
of the
proposed
distribution.
It is shown
that the TAD
is more
adequate for
modeling
this data
than
Aradhana
distribution
and some
other
available
distributions. 

Mohammed
Mahmoud
Gharaibeh
JJMS,
2020, 13(2),287304

Partition
Dimension
and Strong
Metric
Dimension of
Chain Cycle
Let G be a
connected
graph with
vertex set V
(G) and edge
set E(G).
For an
ordered
kpartition
ΙΙ = {Q1; :
: : ;Qk} of
V (G), the
representation
of a vertex
................


T. Ur Rehman
N. Mehreen
JJMS,
2020, 13(2),305325




