Results 91 to 100 of about 63,399 (238)
Hyperbolic Gradient-Bourgoignon Flow
پژوهشهای ریاضی, 2022 Introduction Ricci solitons as a generalization of Einstein manifolds introduced by Hamilton in mid 1980s. In the last two decades, a lot of researchers have been done on Ricci solitons.
Hamed Faraji +2 more
doaj
More Than Regulation: Challenging Habermas on the Future of the Public Sphere
Journal of Social Philosophy, EarlyView.
Bernardo Ferro
wiley +1 more source
ChemPlusChem, Volume 90, Issue 12, December 10, 2025.Rigorous frameworks construction toward the development of science‐based machine learning (ML) schemes: invocation of statistical learning and data‐driven methods within the diverse materials science fields, from materials characterization to molecular modeling utilizing domain knowledge to facilitate fundamental understanding and scientific discovery.
Niki Vergadou, Vassilios Constantoudis
wiley +1 more source
Arthroscopy Techniques, Volume 14, Issue 12, December 2025.Abstract Anterior cruciate ligament (ACL) reconstruction is one of the most common orthopaedic surgical procedures. The risk of clinical failure after isolated ACL reconstruction in high‐risk populations is as high as 40% at 2 years postoperatively.
Taylor M. Ricci, Alexander J. Hoffer
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Nonassociative differential geometry and gravity with non-geometric fluxes
Journal of High Energy Physics, 2018 We systematically develop the metric aspects of nonassociative differential geometry tailored to the parabolic phase space model of constant locally non-geometric closed string vacua, and use it to construct preliminary steps towards a nonassociative ...
Paolo Aschieri +2 more
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New Way to Calculate Ricci Tensor and Ricci Scalar
Journal of High Energy Physics, Gravitation and Cosmology, 2019 In the theory of general relativity, the finding of the Einstein Field Equation happens in a complex mathematical operation, a process we don’t need any more. Through a new theory in vector analysis, we’ll see that we can calculate the components of the Ricci tensor, Ricci scalar, and Einstein Field Equation directly in an easy way without the need to ...
openaire +2 more sources
On Almost C(α)-Manifold Satisfying Certain Curvature Conditions
Cumhuriyet Science JournalThis research article is about the geometry of the almost C(α)- manifold. Some important properties of the almost C(α)- manifold with respect to the W_3- curvature tensor, such as W_3-flat and W_3- semi-symmetry, are investigated.
Pakize Uygun +2 more
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A (CHR)3-flat trans-Sasakian manifold
Pracì Mìžnarodnogo Geometričnogo Centru, 2019 In [4] M. Prvanovic considered several curvaturelike tensors defined for Hermitian manifolds. Developing her ideas in [3], we defined in an almost contact Riemannian manifold another new curvaturelike tensor field, which is called a contact ...
Koji Matsumoto
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Mass-induced instability of SAdS black hole in Einstein–Ricci cubic gravity
European Physical Journal C: Particles and Fields, 2018 We perform the stability analysis of Schwarzschild-AdS (SAdS) black hole in the Einstein–Ricci cubic gravity. It shows that the Ricci tensor perturbations exhibit unstable modes for small black holes.
Yun Soo Myung
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Some Properties of Generalized Einstein Tensor for a Pseudo-Ricci Symmetric Manifold
Advances in Mathematical Physics, 2020 The object of the paper is to study some properties of the generalized Einstein tensor GX,Y which is recurrent and birecurrent on pseudo-Ricci symmetric manifolds PRSn. Considering the generalized Einstein tensor GX,Y as birecurrent but not recurrent, we
S. Aynur Uysal +1 more
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