Results 11 to 20 of about 40 (26)

Statistical analysis of childhood and early adolescent externalizing behaviors in a middle low income country [PDF]

open access: yes, 2020
The article show the pattern of externalizing behavior across age, gender, school type, and school level, with reference to aggression, delinquency, and hyperactivity.
Achembach   +159 more
core   +1 more source

Invariants of complex structures on nilmanifolds [PDF]

open access: yes, 2015
Fil: Rodríguez Valencia, Edwin Alejandro. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina.Fil: Rodríguez Valencia, Edwin Alejandro. Universidad Nacional de Córdoba. Centro de Investigación y Estudios de Matemática;
Rodríguez Valencia, Edwin Alejandro
core   +2 more sources

Weakly complex homogeneous spaces [PDF]

open access: yes, 2012
We complete our recent classification [GMS11] of compact inner symmetric spaces with weakly complex tangent bundle by filling up a case which was left open, and extend this classification to the larger category of compact homogeneous spaces with ...
Moroianu, Andrei, Semmelmann, Uwe
core   +3 more sources

Symplectic cohomologies and deformations

open access: yes, 2018
In this note we study the behavior of symplectic cohomology groups under symplectic deformations. Moreover, we show that for compact almost-K\"ahler manifolds $(X,J,g,\omega)$ with $J$ $\mathcal{C}^\infty$-pure and full the space of de Rham harmonic ...
Tardini, Nicoletta, Tomassini, Adriano
core   +1 more source

A general Schwarz Lemma for almost-Hermitian manifolds

open access: yes, 2007
We prove a version of Yau's Schwarz Lemma for general almost-complex manifolds equipped with Hermitian metrics. This requires an extension to this setting of the Laplacian comparison theorem.
Tosatti, Valentino
core   +1 more source

Constructing symplectic forms on 4-manifolds which vanish on circles

open access: yes, 2004
Given a smooth, closed, oriented 4-manifold X and alpha in H_2(X,Z) such that alpha.alpha > 0, a closed 2-form w is constructed, Poincare dual to alpha, which is symplectic on the complement of a finite set of unknotted circles.
Gay, David T., Kirby, Robion
core   +1 more source

On the spaces of (d + dc)-harmonic forms and (d + dλ)-harmonic forms on almost Hermitian manifolds and complex surfaces [PDF]

open access: yes
In this paper, we study the spaces of (d + dc)-harmonic forms and of (d + dλ)-harmonic forms, a natural generalization of the spaces of Bott-Chern harmonic forms (respectively, symplectic harmonic forms) from complex (respectively, symplectic) manifolds ...
Sillari L., Tomassini A.
core   +1 more source

Geometry of universal embedding spaces for almost complex manifolds [PDF]

open access: yes
summary:We investigate the geometry of universal embedding spaces for compact almost-complex manifolds of a given dimension, and related constructions that allow for an extrinsic study of the integrability of almost-complex structures.
Clemente, Gabriella
core   +1 more source

The complex geometry of a hypothetical complex structure on $S^6$

open access: yes, 2018
This article is a survey about or introduction to certain aspects of the complex geometry of a hypothetical complex structure on the six-sphere. We discuss a result of Peternell--Campana--Demailly on the algebraic dimension of a hypothetical complex six ...
Lehn, Christian   +2 more
core   +1 more source

Almost complex structures on the cotangent bundle

open access: yes, 2005
We construct some lift of an almost complex structure to the cotangent bundle, using a connection on the base manifold. This generalizes the complete lift defined by I.Sato and the horizontal lift introduced by K.Yano and S.Ishihara.
Bertrand, Florian
core   +4 more sources

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