Results 61 to 70 of about 76,069 (299)
Foliated g-structures and riemannian foliations
Manuscripta Mathematica, 1990 The commuting sheaf \({\mathcal C}\) of a G-foliation is defined and used to study \(\nabla\)-G-foliations. (A foliation \({\mathcal F}\) is a \(\nabla\)-G- foliation when it admits a transversal N with a holonomy invariant G- structure and a G-connection \(\nabla\) for which holonomy maps occur to be local affine transformations.) The main result says
openaire +2 more sources
Time after time – circadian clocks through the lens of oscillator theory
FEBS Letters, EarlyView.Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo +2 more
wiley +1 more source
Dimension Distortion by Sobolev Mappings in Foliated Metric Spaces
Analysis and Geometry in Metric Spaces, 2013 We quantify the extent to which a supercritical Sobolev mapping can increase the dimension of subsets of its domain, in the setting of metric measure spaces supporting a Poincaré inequality. We show that the set of mappings that distort the dimensions of
Balogh Zoltán M. +2 more
doaj +1 more source
Enlargeability, foliations, and positive scalar curvature
, 2017 We extend the deep and important results of Lichnerowicz, Connes, and Gromov-Lawson which relate geometry and characteristic numbers to the existence and non-existence of metrics of positive scalar curvature (PSC).
Benameur, Moulay-Tahar +1 more
core +3 more sources
Influence of Foliation Orientation on Tunnel Behavior
, 2017 The relative orientation of foliation or closely spaced bedding has an important influence on the behavior of underground structures. Not only the potential failure mode is controlled by the relative orientation between underground opening and foliation ...
W. Schubert, J. M. Mendez
semanticscholar +1 more source
FEBS Letters, EarlyView.Cryptochrome and PAS/LOV proteins play intricate roles in circadian clocks where they act as both sensors and mediators of protein–protein interactions. Their ubiquitous presence in signaling networks has positioned them as targets for small‐molecule therapeutics. This review provides a structural introduction to these protein families.
Eric D. Brinckman +2 more
wiley +1 more source
Causal Dynamical Triangulations without preferred foliation [PDF]
, 2013 We introduce a generalized version of the Causal Dynamical Triangulations (CDT) formulation of quantum gravity, in which the regularized, triangulated path integral histories maintain their causal properties, but do not have a preferred proper-time ...
S. Jordan, R. Loll, R. Loll
semanticscholar +1 more source
Rapid evolution of complex limit cycles [PDF]
, 2009 The current article studies certain problems related to complex cycles of holomorphic foliations with singularities in the complex plane. We focus on the case when polynomial differential one-form gives rise to a foliation by Riemann surfaces.
Dimitrov, Nikolay
core
In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS
FEBS Letters, EarlyView.We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka +11 more
wiley +1 more source
Approximating $C^{1,0}$-foliations
, 2015 We extend the Eliashberg-Thurston theorem on approximations of taut oriented $C^2$-foliations of 3-manifolds by both positive and negative contact structures to a large class of taut oriented $C^{1,0}$-foliations, where by $C^{1,0}$ foliation, we mean a ...
Kazez, William H., Roberts, Rachel
core +1 more source