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arXiv research

A locally-built, LLM-digested index of recent arXiv papers in quant finance, geometry/topology, and statistical ML — keyword search served straight from SQLite on this machine.

168,742 papers · 148 categories

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14294357 · May 202619922001200920172026
48 results for quarter symmetric non-metric

The paper studies a new connection on Riemannian manifolds and finds conditions for symplectic manifolds.

problem Exploring a new quarter-symmetric non-metric connection on Riemannian manifolds.
method Analyzes the properties and relations of the torsion tensor and curvature tensors of the new connection.
result Conditions for a manifold to be symplectic when endowed with the new connection.

Study characterizes submanifolds in metallic semi-Riemannian manifolds with specific connections.

problem Characterizing submanifolds in metallic semi-Riemannian manifolds.
method Introduces and analyzes invariant and screen semi-invariant lightlike submanifolds with a quarter symmetric non-metric connection.
result Characterizes integrability and parallelism of distributions in these submanifolds.

The paper classifies geometric structures of δ-almost Yamabe solitons on paracontact metric manifolds.

problem Characterizing δ-almost Yamabe solitons on paracontact metric manifolds.
method Investigation of geometric structures under specific assumptions, including quarter-symmetric non-metric connections.
result Conditions for δ-almost Yamabe solitons to be expanding, steady, or shrinking.

The paper studies special warped products with a specific connection on super Riemannian manifolds.

problem Investigating curvature and Ricci tensors on super warped product spaces with a semi-symmetric non-metric connection.
method Defined a semi-symmetric non-metric connection, computed curvature and Ricci tensors, and introduced and analyzed two types of super warped product spaces.
result Conditions for two super warped product spaces with a semi-symmetric non-metric connection to be Einstein spaces are provided.

The study investigates properties of a specific Riemannian manifold with a semi-symmetric non-metric connection.

problem Characterizing properties of a Riemannian manifold with a semi-symmetric non-metric connection.
method Construction of a non-trivial example, proving manifold properties based on the metric being a gradient soliton or Yamabe soliton.
result A manifold with a semi-symmetric non-metric connection and gradient Ricci/Yamabe soliton is of constant curvature.

H. A. Hayden [1] introduced the idea of semi-symmetric non-metric connection on a Riemannian manifold in (1932). Agashe and Chafle \cite{1} defined and studied semi-symmetric non-metric connection on a Riemannian manifold. In the present paper, we define a new type of semi-symmetric non-metric connexion in an almost co…

2017-11-03abs ↗pdf ↗

In this paper, we study the Einstein warped products and multiply warped products with a quarter-symmetric connection. We also study warped products and multiply warped products with a quarter-symmetric connection with constant scalar curvature. Then apply our results to generalized Robertson-Walker spacetimes with a q…

2014-10-01abs ↗pdf ↗

Study on Einstein warped spaces with specific connections and curvature properties.

problem Characterizing Einstein warped spaces with quarter symmetric connections.
method Analyzing curvature, Ricci, and scalar tensors with quarter symmetric connections.
result Proves conditions under which an Einstein warped space becomes a Riemannian product space.

In this paper, we study the Einstein multiply warped products with a semi-symmetric non-metric connection and the multiply warped products with a semi-symmetric non-metric connection with constant scalar curvature, we apply our results to generalized Robertson-Walker spacetimes with a semi-symmetric non-metric connecti…

2012-07-21abs ↗pdf ↗

The paper studies quarter-symmetric connections on Hermitian and Kähler manifolds.

problem Examining quarter-symmetric connections on almost Hermitian and Kähler manifolds.
method Analyzing the curvature tensors and their properties with respect to quarter-symmetric connections.
result Constructed tensors that do not depend on the quarter-symmetric connection generator, including the Weyl projective curvature tensor.

Paper derives inequalities for submanifolds in a specific geometric space.

problem Chen's inequalities for submanifolds in (κ,μ)(κ,μ)-contact space form.
method Using generalized semi-symmetric non-metric connections.
result Derives new inequalities for submanifolds.

The paper studies *-ηη-Ricci-Yamabe solitons on αα-Cosymplectic manifolds.

problem Exploring *-ηη-Ricci-Yamabe solitons on αα-Cosymplectic manifolds.
method Analyzing curvature properties and developing soliton characteristics with respect to quarter-symmetric metric connection.
result Characteristics and nature of *-ηη-Ricci-Yamabe solitons on αα-Cosymplectic manifolds.

Paper establishes inequality for submanifolds in real space forms with semi-symmetric non-metric connection.

problem Deriving a sharp lower bound for Ricci curvature of submanifolds.
method Using semi-symmetric non-metric connection, derive a lower bound for Ricci curvature in terms of mean curvature vector and second fundamental form.
result Established Hineva inequality for submanifolds with semi-symmetric non-metric connection.

The paper studies geometric structures of wormholes using a new connection.

problem Exploring new geometric properties of wormholes.
method Extended Levi-Civita connection to semi-symmetric non-metric connections.
result Morris-Thorne wormholes exhibit specific geometric properties.

In this paper, we study non integrable distributions in a Riemannian manifold with a semi-symmetric metric connection, a semi-symmetric non-metric connection and a statistical connection. We obtain the Gauss, Codazzi, and Ricci equations for non integrable distributions with respect to the semi-symmetric metric connect…

2019-10-17abs ↗pdf ↗

The paper derives inequalities for submanifolds in quaternionic Kaehler manifolds.

problem Analyzing submanifolds in quaternionic Kaehler manifolds.
method Established Chen's and generalized Casorati curvature inequalities.
result Derived inequalities for submanifolds in quaternionic Kaehler manifolds.

Study on surfaces with constant curvature under a specific connection.

problem Classifying surfaces with constant sectional curvature under a semi-symmetric non-metric connection.
method Analyzing surfaces in R3\mathbb{R}^3 with a canonical semi-symmetric non-metric connection determined by a vector field.
result Classification of surfaces under various conditions (cylindrical, rotational) with constant sectional curvature.

Study geometric properties of SGL submanifolds in a specific manifold.

problem Analyzing geometric characteristics of SGL submanifolds.
method Examines integrability conditions and parallelism properties of distributions.
result Provides insights into geometric behavior of SGL submanifolds.

The present study initially identify the generalized symmetric connections of type (α,β)(α,β), which can be regarded as more generalized forms of quarter and semi-symmetric connections. The quarter and semi-symmetric connections are obtained respectively when (α,β)=(1,0)(α,β)=(1,0) and (α,β)=(0,1)(α,β)=(0,1). Taking that into account, a ne…

2018-04-30abs ↗pdf ↗

The present study initially identified the generalized symmetric connections (α,β)(α,β) typed, which can be regarded as more generalised forms of quarter and semi-symmetric connections. The quarter and semi-symmetric connections are obtained respectively particularly when (α,β)=(1,0)(α,β)=(1,0) and (α,β)=(0,1)(α,β)=(0,1) are taken into con…

2018-04-26abs ↗pdf ↗

Study of minimal surfaces in 3D space with special connections.

problem Classification of minimal translation surfaces in Euclidean spaces with semi-symmetric connections.
method Analysis of singular minimal translation surfaces in a 3D Euclidean space with a semi-symmetric connection.
result Classification of singular minimal translation surfaces in Euclidean spaces with semi-symmetric connections.

The study classifies minimal translation surfaces in 3D and 3D_1.

problem Classifying minimal translation surfaces in specific geometric settings.
method Defined and classified minimal translation surfaces with semi-symmetric connections.
result New classification of minimal translation surfaces in R3\mathbb{R}^3 and R13\mathbb{R}^3_1.

In a Riemannian manifold, the existence of a new connection is proved. In particular cases, this connection reduces to several symmetric, semi-symmetric and quarter-symmetric connections; even some of them are not introduced so far. We also find formula for curvature tensor of this new connection.

2008-02-05abs ↗pdf ↗

We investigate L-sectional curvature of S-manifolds with respect to the Rieman- nian connection and to certain semi-symmetric metric and non-metric connections naturally related with the structure, obtaining conditions for them to be constant and giving examples of S-manifolds in such conditions. Moreover, we calculate…

2013-02-08abs ↗pdf ↗

The present paper deals with the study of totally real submanifolds and C\textit{C}-totally real submanifolds of (LCS)n(LCS)_n-manifolds with respect to Levi-Civita connection as well as quarter symmetric metric connection. It is proved that scalar curvature of C\textit{C}-totally real submanifolds of (LCS)n(LCS)_n-manifold …

2017-10-13abs ↗pdf ↗

The paper classifies translation surfaces with constant curvature in a specific connection.

problem Classifying translation surfaces with constant curvature in a semi-symmetric non-metric connection.
method Completely classified translation surfaces of constant sectional curvature in a semi-symmetric non-metric connection.
result Translation surfaces of constant curvature are generalized cylinders, similar to the Levi-Civita connection but with additional non-constant curvature cases.

The paper extends affine connection results to singular warped and twisted products.

problem Generalizing affine connections to singular warped and twisted products.
method Study of singular multiply warped products and singular twisted products with semi-symmetric metric and non-metric connections, discussing Koszul forms and curvature.
result Theoretical results on curvature and Koszul forms for singular multiply warped and twisted products.

Quarter-hour market bursts predict algorithmic trading and returns in crypto futures.

problem Predicting returns in cryptocurrency futures markets using quarter-hour market bursts.
method Analysis of trade data and Autocorrelation Map to identify and quantify algorithmic trading activity.
result Quarter-hour market bursts are associated with algorithmic trading and can predict returns.

Even at the beginning of 2008, the economic recession of 2008/09 was not being predicted. The failure to predict recessions is a persistent theme in economic forecasting. The Survey of Professional Forecasters (SPF) provides data on predictions made for the growth of total output, GDP, in the United States for one, two…

2017-01-03abs ↗pdf ↗

Using an artificial neural network (ANN), a fixed universe of approximately 1500 equities from the Value Line index are rank-ordered by their predicted price changes over the next quarter. Inputs to the network consist only of the ten prior quarterly percentage changes in price and in earnings for each equity (by quart…

2008-06-16abs ↗pdf ↗