Results 61 to 70 of about 231 (179)
Some results on almost eta-Ricci-Bourguignon solitons
, 2021 We determine a formula to compute the defining function of a gradient almost Ricci-Bourguignon soliton by means of the potential vector field, providing in this sense two examples. We also give a rigidity result in this case.
Blaga, Adara M., Tastan, Hakan M.
core +1 more source
NAADF: Globally Illuminated Voxel Worlds Accelerated with Nested Axis‐Aligned Distance Fields
Computer Graphics Forum, EarlyView.Abstract Achieving realistic rendering of 3D scenes in real time using path tracing is challenging due to the high sample count required, with ray tracing as the bottleneck. Focusing on voxels as a geometry representation offers significant opportunities for optimizations, especially for tracing the rays, but also for computing the samples.
A. Ulschmid +4 more
wiley +1 more source
Trivial doubly warped products
FilomatThe aim of the paper is to provide new obstructions to the existence of doubly warped products. We prove that, if the factor manifolds of a doubly warped product are connected and locally product Riemannian manifolds, then, the almost product structure naturally induced on the doubly warped product is parallel if and only if the manifold is
openaire +1 more source
On compact Einstein doubly warped product manifolds
Tamkang Journal of Mathematics, 2018 In this paper, the non-existence of connected, compact Einstein doubly warped product semi-Riemannian manifold with non-positive scalar curvature is proved. It is also shown that there does not exist non-trivial connected Einstein doubly warped product semi-Riemannian manifold with compact base $B$ or fibre $F$.
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Curvature blow-up in doubly-warped product metrics evolving by Ricci flow
, 2019 For any manifold N[superscript p] admitting an Einstein metric with positive Einstein constant, we study the behavior of the Ricci flow on high-dimensional products M = N[superscript p] X S[superscript q+1] with doubly-warped product metrics.
Stolarski, Maxwell Edward
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Fast Nodal Hessian Computation for Peridynamic Fracture Simulation
Computer Graphics Forum, EarlyView.A fast, exact nodal Hessian computation for Non‐Ordinary State‐Based Peridynamics is introduced through analytical simplification and a warp‐centric GPU strategy. The method accelerates preconditioned solvers and Vertex Block Descent, enabling interactive fracture simulation with physical accuracy.
Yuxiong Qin +2 more
wiley +1 more source
Causal properties of doubly warped spacetimes [PDF]
, 2015 In this talk we will describe the characterization of the chronological relation on doubly warped product spacetimes of the form (a, b) × M1 × M2 with Lorentzian metric g = −dt2 + α1g1 + α2g2, and we will discuss when these spacetimes are causally ...
Aké Hau, Luis +6 more
core
A note on doubly warped product spaces
, 2014 We present a coordinate free approach to derive curvature formulas for pseudo-Riemannian doubly warped product manifolds in terms of curvatures of their submanifolds. We also state the geodesics equation.
openaire +2 more sources
, 2017 In this paper, we establish some optimal inequalities for the squared mean curvature in terms warping functions of a C-totally real doubly warped product submanifold of a locally conformal almost cosymplectic manifold with a pointwise ...
Siraj Uddin +3 more
core +1 more source
Journal of Anatomy, EarlyView.The MacBrain Resource Center (MBRC) postnatal rhesus macaque brain histology datasets are organized into Collections that promote cost‐effective de novo research. This article provides examples from Collections 5, 6, and 7 and describes the histo‐ and immunohistochemical (IHC) processing of materials for Collection 6.
Valeria Mendoza‐Silva +19 more
wiley +1 more source