Results 71 to 80 of about 78,272 (250)
Journal of Neuroscience, 2014 Folding of the cortex and the persistence of radial glia (RG)-like cells called Bergmann glia (BG) are hallmarks of the mammalian cerebellum. Similar to basal RG in the embryonic neocortex, BG maintain only basal processes and continuously express neural
Kairong Li +4 more
semanticscholar +1 more source
On the uniqueness of the contact structure approximating a foliation [PDF]
, 2013 According to a theorem of Eliashberg and Thurston, a C-2-foliation on a closed 3-manifold can be C-0-approximated by contact structures unless all leaves of the foliation are spheres.
T. Vogel
semanticscholar +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
Advances in MathematicsGiven a foliation $\mathcal{F}$ on $X$ and an embedding $X\subseteq Y$, is there a foliation on $Y$ extending $\mathcal{F}$? Using formal methods, we show that this question has an affirmative answer whenever the embedding is sufficiently positive with respect to $(X,\mathcal{F})$ and the singularities of $\mathcal{F}$ belong to a certain class.
Perrella, Pablo, Velazquez, Sebastián
openaire +2 more sources
Regularization of Gamma_1-structures in dimension 3 [PDF]
, 2009 For $\Gamma_1$-structures on 3-manifolds, we give a very simple proof of Thurston's regularization theorem, first proved in \cite{thurston}, without using Mather's homology equivalence.
Laudenbach, Francois, Meigniez, Gaël
core +3 more sources
Quasi-Shadowing for Partially Hyperbolic Diffeomorphisms
, 2014 A partially hyperbolic diffeomorphism $f$ has quasi-shadowing property if for any pseudo orbit ${x_k}_{k\in \mathbb{Z}}$, there is a sequence of points ${y_k}_{k\in \mathbb{Z}}$ tracing it in which $y_{k+1}$ is obtained from $f(y_k)$ by a motion $\tau ...
Hu, Huyi, Zhou, Yunhua, Zhu, Yujun
core +1 more source
Pseudo-automorphisms with no invariant foliation [PDF]
, 2013 We construct an example of a birational transformation of a rational threefold for which the first and second dynamical degrees coincide and are $>1$, but which does not preserve any holomorphic (singular) foliation.
Eric Bedford +2 more
semanticscholar +1 more source
Combinatorial volume preserving flows and taut foliations [PDF]
, 2000 A π₁-injective closed surface in an orientable 3-manifold with a tangentially smooth, transversely C⁰ taut foliation can be homotoped to an immersed surface which is either transverse to the foliation except at isolated saddle tangencies or mapped into a
Gabai, David
core
A relativistically covariant version of Bohm's quantum field theory for the scalar field
, 2004 We give a relativistically covariant, wave-functional formulation of Bohm's quantum field theory for the scalar field based on a general foliation of space-time by space-like hypersurfaces. The wave functional, which guides the evolution of the field, is
Barut A O +13 more
core +1 more source
Phenological strategies of Annona from deciduous forest of Chiapas, Mexico
Botanical Sciences, 2016 Background. Phenological descriptions of plant species are used to understand cycles of foliation, flowering and fruiting. These studies provide useful means for understanding the relationships between plants and their environment. Question. What are
Alma Rosa González-Esquinca +3 more
doaj +1 more source