Results 11 to 20 of about 4,368 (136)
Neuromodulation: Technology at the Neural Interface, EarlyView., 2021 Abstract Background Posttraumatic stress disorder (PTSD) is associated with autonomic dysfunction as indicated by deficits in the sympathetic and parasympathetic nervous systems. These abnormalities are expressed as elevated heart rate and reduced heart rate variability (HRV), respectively.
Camila Cosmo +4 more
wiley +1 more source
Generalized $\alpha$-attractor models from elementary hyperbolic surfaces [PDF]
, 2018 We consider generalized $\alpha$-attractor models whose scalar potentials are globally well-behaved and whose scalar manifolds are elementary hyperbolic surfaces.
Babalic, Elena Mirela +1 more
core +4 more sources
On the cyclicity of Kolmogorov polycycles
Electronic Journal of Qualitative Theory of Differential Equations, 2022 In this paper we study planar polynomial Kolmogorov's differential systems \[ X_\mu\quad\begin{cases}{\dot{x}=f(x,y;\mu),}\\{\dot{y}=g(x,y;\mu),} \end{cases} \] with the parameter $\mu$ varying in an open subset $\Lambda\subset\mathbb{R}^N ...
David Marín, Jordi Villadelprat
doaj +1 more source
M-theory compactifications on hyperbolic spaces [PDF]
, 2007 Negatively-curved, maximally symmetric hyperbolic spaces enjoy a number of remarkable properties that can be traced back to Riemannian geometry, group theory and algebraic geometry.
Orlando, Domenico
core +2 more sources
Embeddings of 3-manifolds in S^4 from the point of view of the 11-tetrahedron census
, 2020 This is a collection of notes on embedding problems for 3-manifolds. The main question explored is `which 3-manifolds embed smoothly in the 4-sphere?' The terrain of exploration is the Burton/Martelli/Matveev/Petronio census of triangulated prime closed ...
Budney, Ryan, Burton, Benjamin A.
core +1 more source
Conjugacy class of homeomorphisms and distortion elements in groups of homeomorphisms [PDF]
, 2017 Let S be a compact connected surface and let f be an element of the group Homeo\_0(S) of homeomorphisms of S isotopic to the identity. Denote by \tilde{f} a lift of f to the universal cover of S. Fix a fundamental domain D of this universal cover.
Militon, Emmanuel
core +3 more sources
The Quaternionic Hardy Space and the Geometry of the Unit Ball
Bruno Pini Mathematical Analysis Seminar, 2015 The quaternionic Hardy space of slice regular functions H2(B) is a reproducing kernel Hilbert space. In this note we see how this property can be exploited to construct a Riemannian metric on the quaternionic unit ball B and we study the geometry arising
Giulia Sarfatti
doaj +1 more source
The hyperbolic geometry of financial networks
Scientific Reports, 2021 Based on data from the European banking stress tests of 2014, 2016 and the transparency exercise of 2018 we construct networks of European banks and demonstrate that the latent geometry of these financial networks can be well-represented by geometry of ...
Martin Keller-Ressel, Stephanie Nargang
doaj +1 more source
Non-relativistic supersymmetry on curved three-manifolds
Journal of High Energy Physics, 2020 We construct explicit examples of non-relativistic supersymmetric field theories on curved Newton-Cartan three-manifolds. These results are obtained by performing a null reduction of four-dimensional supersymmetric field theories on Lorentzian manifolds ...
E.A. Bergshoeff +4 more
doaj +1 more source
Gauge fixing in (2+1)-gravity with vanishing cosmological constant [PDF]
, 2012 We apply Dirac's gauge fixing procedure to (2+1)-gravity with vanishing cosmological constant. For general gauge fixing conditions based on two point particles, this yields explicit expressions for the Dirac bracket.
Meusburger, Catherine +1 more
core +1 more source