Characterization of Bach and Cotton Tensors on a Class of Lorentzian Manifolds
Yanlin Li,
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M. S. Siddesha,
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H. Aruna Kumara
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et al.
Mathematics,
Journal Year:
2024,
Volume and Issue:
12(19), P. 3130 - 3130
Published: Oct. 7, 2024
In
this
work,
we
aim
to
investigate
the
characteristics
of
Bach
and
Cotton
tensors
on
Lorentzian
manifolds,
particularly
those
admitting
a
semi-symmetric
metric
ω-connection.
First,
prove
that
manifold
ω-connection
with
parallel
tensor
is
quasi-Einstein
flat.
Next,
show
any
Language: Английский
Euclidean hypersurfaces isometric to spheres
AIMS Mathematics,
Journal Year:
2024,
Volume and Issue:
9(10), P. 28306 - 28319
Published: Jan. 1, 2024
<p>Given
an
immersed
hypersurface
$
M^{n}
in
the
Euclidean
space
E^{n+1}
$,
tangential
component
$\boldsymbol{\omega
}$
of
position
vector
field
is
called
basic
field,
and
smooth
function
normal
gives
a
\sigma
on
support
hypersurface.
In
first
result,
we
show
that
complete
simply
connected
positive
Ricci
curvature
with
shape
operator
T
invariant
under
satisfies
static
perfect
fluid
equation
if
only
isometric
to
sphere.
second
compact
gradient
eigenvector
eigenvalue
mean
H
integral
squared
length
\nabla
has
certain
lower
bound,
giving
characterization
third
incompressible
}$,
sphere.</p>
Language: Английский
A Conformal η-Ricci Soliton on a Four-Dimensional Lorentzian Para-Sasakian Manifold
Axioms,
Journal Year:
2024,
Volume and Issue:
13(11), P. 753 - 753
Published: Oct. 31, 2024
This
paper
focuses
on
some
geometrical
and
physical
properties
of
a
conformal
η-Ricci
soliton
(Cη-RS)
four-dimension
Lorentzian
Para-Sasakian
(LP-S)
manifold.
The
first
section
presents
an
introduction
to
Cη-RS
LP-S
manifolds,
followed
by
discussion
preliminary
ideas
about
the
LP-Sasakian
In
subsequent
sections,
we
establish
several
results
pertaining
manifolds
that
exhibit
Cη-RS.
Additionally,
consider
certain
conditions
associated
with
manifolds.
Besides
these
points
view,
this
in
perfect
fluid
spacetime
obtain
interesting
properties.
Finally,
present
case
study
Language: Английский
Modified Sweeping Surfaces in Euclidean 3-Space
Axioms,
Journal Year:
2024,
Volume and Issue:
13(11), P. 800 - 800
Published: Nov. 18, 2024
In
this
study,
we
explore
the
sweeping
surfaces
in
Euclidean
3-space,
utilizing
modified
orthogonal
frames
with
non-zero
curvature
and
torsion,
which
allows
us
to
consider
spine
curves
even
if
their
second
differentiations
vanish.
If
of
curve
a
surface
has
discrete
zero
points,
Frenet
frame
might
undergo
discontinuous
change
orientation.
Therefore,
conventional
parametrization
such
cannot
be
given.
Thus,
introduce
two
types
by
considering
curves;
first
one’s
is
not
identically
torsion
zero.
Then,
determine
criteria
for
classifying
coordinate
these
as
geodesic,
asymptotic,
or
lines.
Additionally,
delve
into
determining
minimal,
developable,
Weingarten.
Through
our
analysis,
aim
clarify
characteristics
defining
surfaces.
We
present
graphical
representations
sample
enhance
understanding
provide
concrete
examples
that
showcase
properties.
Language: Английский
Exact Solutions to Fractional Schrödinger–Hirota Equation Using Auxiliary Equation Method
Guangyuan Tian,
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Xianji Meng
No information about this author
Axioms,
Journal Year:
2024,
Volume and Issue:
13(10), P. 663 - 663
Published: Sept. 26, 2024
In
this
paper,
we
consider
the
fractional
Schrödinger–Hirota
(FSH)
equation
in
sense
of
a
conformable
derivative.
Through
traveling
wave
transformation,
change
FSH
to
an
ordinary
differential
equation.
We
obtain
several
exact
solutions
through
auxiliary
method,
including
soliton,
exponential
and
periodic
solutions,
which
are
useful
analyze
behaviors
show
that
method
improves
speed
discovery
solutions.
Language: Английский
A Note on the Infinitesimal Bending of a Rectifying Curve
Ştefan-Cezar Broscăţeanu,
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Adela Mihai,
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Andreea Olteanu
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et al.
Symmetry,
Journal Year:
2024,
Volume and Issue:
16(10), P. 1361 - 1361
Published: Oct. 14, 2024
Both
notions,
of
an
infinitesimal
bending
a
curve
and
rectifying
curve,
play
important
roles
in
the
theory
curves.
In
this
short
note,
we
begin
study
curve.
Language: Английский
Vector fields on bifurcation diagrams of quasi singularities
AIMS Mathematics,
Journal Year:
2024,
Volume and Issue:
9(12), P. 36047 - 36068
Published: Jan. 1, 2024
<p>We
describe
the
generators
of
vector
fields
tangent
to
bifurcation
diagrams
and
caustics
simple
quasi
boundary
singularities.
As
an
application,
submersions
on
pair
$
(G,
B)
$,
which
consists
a
cuspidal
edge
G
in
\mathbb{R}^3
that
contains
distinguishing
regular
curve
B
are
classified.
This
classification
was
used
as
means
investigate
contact
general
equipped
with
B\subset
has
planes.
The
singularities
height
functions
discussed
they
related
curvatures
torsions
distinguished
curves
edge.
In
addition
this,
discriminants
versal
deformations
were
accomplished
described
duality
edge.</p>
Language: Английский