Results 71 to 80 of about 299,137 (271)

A Primer on Spacetime Singularities I: Mathematical Framework

open access: yesUniverse
This 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
doaj   +1 more source

Inhomogenized sudden future singularities

open access: yes, 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

Contact singularities

open access: yesmanuscripta mathematica, 2002
Comment: 11 pages, Latex, uses diagrams.tex of P. Taylor, see e.g. ftp://ftp.dante.de/pub/tex/macros/generic/diagrams/taylor/diagrams.tex.
Campana, Frédéric, Flenner, Hubert
openaire   +2 more sources

NAKED SINGULARITY EXPLOSION [PDF]

open access: yesThe Ninth Marcel Grossmann Meeting, 2000
6 pages, 3 figures, Accepted for Publication in Phys. Rev.
Harada, Tomohiro   +2 more
openaire   +2 more sources

Function‐driven design of a surrogate interleukin‐2 receptor ligand

open access: yesFEBS Letters, EarlyView.
Interleukin (IL)‐2 signaling can be achieved and precisely fine‐tuned through the affinity, distance, and orientation of the heterodimeric receptors with their ligands. We designed a biased IL‐2 surrogate ligand that selectively promotes effector T and natural killer cell activation and differentiation. Interleukin (IL) receptors play a pivotal role in
Ziwei Tang   +9 more
wiley   +1 more source

Generalized Antiorthotomics of (n, m)-Cusp Curves

open access: yesMathematics
In optics, light rays emitted from a light source form a wavefront (orthotomic) upon reflection by a mirror. The mirror is referred to as an antiorthotomic of the orthotomic.
Qiming Zhao   +3 more
doaj   +1 more source

Singularities in the flying electromagnetic doughnuts

open access: yesNanophotonics, 2019
Flying doughnuts (FDs) are exact propagating solutions of Maxwell equations in the form of single-cycle, space-time non-separable toroidal pulses. Here we review their properties and reveal the existence of a complex and robust fine topological structure.
Zdagkas Apostolos   +4 more
doaj   +1 more source

Optimal Shadowing Filter for a Positioning and Tracking Methodology with Limited Information

open access: yesSensors, 2019
Positioning and tracking a moving target from limited positional information is a frequently-encountered problem. For given noisy observations of the target’s position, one wants to estimate the true trajectory and reconstruct the full phase space ...
Ayham Zaitouny   +2 more
doaj   +1 more source

Spectral singularities and Bragg scattering in complex crystals

open access: yes, 2010
Spectral singularities that spoil the completeness of Bloch-Floquet states may occur in non-Hermitian Hamiltonians with complex periodic potentials. Here an equivalence is established between spectral singularities in complex crystals and secularities ...
L. A. Pastur   +4 more
core   +1 more source

Multiple ETS family transcription factors bind mutant p53 via distinct interaction regions

open access: yesFEBS Letters, EarlyView.
Mutant p53 gain‐of‐function is thought to be mediated by interaction with other transcription factors. We identify multiple ETS transcription factors that can bind mutant p53 and found that this interaction can be promoted by a PXXPP motif. ETS proteins that strongly bound mutant p53 were upregulated in ovarian cancer compared to ETS proteins that ...
Stephanie A. Metcalf   +6 more
wiley   +1 more source

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