Results 11 to 20 of about 8,242,359 (127)
A complex network perspective on brain disease. [PDF]
ABSTRACT If brain anatomy and dynamics have a complex network structure as it has become standard to posit, it is reasonable to assume that such a structure should play a key role not only in brain function but also in brain dysfunction. However, exactly how network structure is implicated in brain damage and whether at least some pathologies can be ...
Papo D, Buldú JM.
europepmc +2 more sources
Cohomology of D-complex manifolds [PDF]
In order to look for a well-behaved counterpart to Dolbeault cohomology in D-complex geometry, we study the de Rham cohomology of an almost D-complex manifold and its subgroups made up of the classes admitting invariant, respectively anti-invariant ...
Daniele Angella +4 more
core +1 more source
Chern-flat and Ricci-flat invariant almost Hermitian structure [PDF]
We study nilmanifolds endowed with a Chern ...
Antonio J. Di Scala +3 more
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Embedding almost-complex manifolds in almost-complex euclidean spaces [PDF]
We show that any compact almost-complex manifold (M, J) of complex dimension m can be pseudo-holomorphically embedded in R6m equipped with a suitable almost-complex structure
Antonio J. Di Scala +6 more
core +1 more source
Almost Riemann Solitons with Vertical Potential on Conformal Cosymplectic Contact Complex Riemannian Manifolds [PDF]
Almost-Riemann solitons are introduced and studied on an almost contact complex Riemannian manifold, i.e., an almost-contact B-metric manifold, which is obtained from a cosymplectic manifold of the considered type by means of a contact conformal ...
Manev, Mancho, Mancho Manev
core +1 more source
A new curvature-like tensor in an almost contact Riemannian manifold
In a M. Prvanović’s paper [5], we can find a new curvature-like tensor in an almost Hermitian manifold.In this paper, we define a new curvature-like tensor, named contact holomorphic Riemannian, briefly (CHR), curvature tensor in an almost ...
Koji Matsumoto
core +2 more sources
Structure connection in an almost contact metric manifold [PDF]
In 1970, semisymetric connection were studied by Yano [1] in a Riemannian manifold and in 1972 Mishra [2] studied affine connection in an almost contact Riemannian manifold.
Sinha, B. B., Yadava, S. L.
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Cohomologies of certain orbifolds [PDF]
We study the Bott–Chern cohomology of complex orbifolds obtained as a quotient of a compact complex manifold by a finite group of ...
Angella, Daniele
core +1 more source
SDFs from Unoriented Point Clouds using Neural Variational Heat Distances
We propose a novel variational approach for computing neural Signed Distance Fields (SDF) from unoriented point clouds. We first compute a small time step of heat flow (middle) and then use its gradient directions to solve for a neural SDF (right). Abstract We propose a novel variational approach for computing neural Signed Distance Fields (SDF) from ...
Samuel Weidemaier +5 more
wiley +1 more source
A new class of almost complex structures on tangent bundle of a Riemannian manifold [PDF]
summary:In this paper, the standard almost complex structure on the tangent bunle of a Riemannian manifold will be generalized. We will generalize the standard one to the new ones such that the induced $(0,2)$-tensor on the tangent bundle using these ...
Baghban, Amir, Abedi, Esmaeil
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