Results 61 to 70 of about 300,939 (289)
Inhomogenized sudden future singularities
, 2005 We find that sudden future singularities may also appear in spatially inhomogeneous Stephani models of the universe. They are temporal pressure singularities and may appear independently of the spatial finite density singularities already known to exist ...
A. Krasiński +6 more
core +1 more source
Physical Review D, 2012 Lifshitz spacetimes are possible gravitational duals to strongly coupled field theories with an anisotropic scaling symmetry. These spacetimes however, have a null curvature singularity. We find that higher dimensional embeddings of Lifshitz also have a similar singularity.
Horowitz, Gary T., Way, Benson
openaire +3 more sources
Defining Roles in Pediatric Palliative Care: Perspectives From Oncology and Palliative Care Teams
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Early integration of pediatric palliative care (PPC) is associated with improved symptom management, quality of life, and healthcare utilization for children with cancer. Despite this, variation persists in how PPC is understood, operationalized, and integrated within pediatric oncology programs. In particular, ambiguity surrounding
Leeat Granek +13 more
wiley +1 more source
On a singular Riemann–Liouville fractional boundary value problem with parameters
Nonlinear Analysis, 2021 We investigate the existence of positive solutions for a nonlinear Riemann–Liouville fractional differential equation with a positive parameter subject to nonlocal boundary conditions, which contain fractional derivatives and Riemann–Stieltjes integrals.
Alexandru Tudorache, Rodica Luca
doaj +1 more source
Surfaces of constant curvature in R^3 with isolated singularities [PDF]
, 2010 We prove that finite area isolated singularities of surfaces with constant positive curvature in R^3 are removable singularities, branch points or immersed conical singularities. We describe the space of immersed conical singularities of such surfaces in
Galvez, Jose A. +2 more
core
, 2018 In the study of normal surface singularities the relation between analytical and topological properties and invariants of the singularity is a very rich problem.
Stevens, Jan
core +1 more source
Rocky Mountain Journal of Mathematics, 1999 Consider a smooth manifold \(M\) and \(g\) a smooth section of the bundle of symmetric two tensors on \(M\). A point \(p\in M\) such that \(g_p\) is degenerate is called a metric singularity. In the first part of this paper, an interesting existence and uniqueness theorem for geodesics through a metric singular point is proven (Theorem 2.6).
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Phase singularity diffusion [PDF]
Optics Letters, 2014 We follow the trajectories of phase singularities at nulls of intensity in the speckle pattern of waves transmitted through random media as the frequency of the incident radiation is scanned in microwave experiments and numerical simulations. Phase singularities are observed to diffuse with a linear increase of the square displacement with frequency ...
Cheng, Xiaojun +2 more
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Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Objective To compare the efficacy and safety of roxarestat versus recombinant human erythropoietin (rhEPO) in the management of renal anemia in patients undergoing maintenance hemodialysis. Methods This was a prospective, open‐label, randomized controlled trial.
Lingling Chen, Junjie Zhu, Qiaonan Ge
wiley +1 more source
A Primer on Spacetime Singularities I: Mathematical Framework
UniverseThis article presents a comprehensive and rigorous overview of spacetime singularities within the framework of classical General Relativity. Singularities are defined through the failure of geodesic completeness, reflecting the limits of predictability ...
Jean-Pierre Luminet
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