Results 1 to 10 of about 1,044 (116)

On LCK solvmanifolds with a property of Vaisman solvmanifolds

open access: yesComplex Manifolds, 2022
The purpose in this paper is to determine a locally conformal Kähler solvmanifold such that the nilradical of the solvable Lie group is constructed by a Heisenberg Lie group.
Sawai Hiroshi
doaj   +2 more sources

Einstein solvmanifolds are standard [PDF]

open access: greenAnnals of Mathematics, 2007
We study Einstein manifolds admitting a transitive solvable Lie group of isometries (solvmanifolds). It is conjectured that these exhaust the class of noncompact homogeneous Einstein manifolds. J. Heber has showed that under certain simple algebraic condition called standard (i.e.
Jorge Lauret
openalex   +5 more sources

New supersymmetric vacua on solvmanifolds [PDF]

open access: yesJournal of High Energy Physics, 2016
We obtain new supersymmetric flux vacua of type II supergravities on four-dimensional Minkowski times six-dimensional solvmanifolds. The orientifold O4, O5, O6, O7, or O8-planes and D-branes are localized. All vacua are in addition not T-dual to a vacuum
Andriot, David
core   +6 more sources

Flat Bundles and Hyper-Hodge Decomposition on Solvmanifolds [PDF]

open access: green, 2014
We study rank $1$ flat bundles over solvmanifolds whose cohomologies are non-trivial. By using Hodge theoretical properties for all topologically trivial rank $1$ flat bundles, we represent the structure theorem of K\"ahler solvmanifolds as extensions of
Hisashi Kasuya
openalex   +3 more sources

Vaisman metrics on solvmanifolds and Oeljeklaus-Toma manifolds [PDF]

open access: green, 2012
We prove the non-existence of Vaisman metrics on some solvmanifolds with left-invariant complex structures. By this theorem, we show that Oeljeklaus-Toma manifolds does not admit Vaisman metrics.Comment: 12 page.
Hisashi Kasuya
openalex   +3 more sources

Cohomologically symplectic solvmanifolds are symplectic [PDF]

open access: bronzeJournal of Symplectic Geometry, 2011
We consider aspherical manifolds with torsion-free virtually polycyclic fundamental groups, constructed by Baues. We prove that if those manifolds are cohomologically symplectic then they are symplectic. As a corollary we show that cohomologically symplectic solvmanifolds are symplectic.
Hisashi Kasuya
openalex   +6 more sources

Locally conformally Kähler solvmanifolds: a survey [PDF]

open access: yesComplex Manifolds, 2019
A Hermitian structure on a manifold is called locally conformally Kähler (LCK) if it locally admits a conformal change which is Kähler. In this survey we review recent results of invariant LCK structures on solvmanifolds and present original results ...
Andrada A., Origlia M.
doaj   +6 more sources

Pseudo-Riemannian Sasaki solvmanifolds [PDF]

open access: green, 2022
We study a class of left-invariant pseudo-Riemannian Sasaki metrics on solvable Lie groups, which can be characterized by the property that the zero level set of the moment map relative to the action of some one-parameter subgroup $\{\exp tX\}$ is a normal nilpotent subgroup commuting with $\{\exp tX\}$, and $X$ is not lightlike.
Diego Conti   +2 more
openalex   +6 more sources

The Anosov theorem for exponential solvmanifolds [PDF]

open access: bronzePacific Journal of Mathematics, 1995
A well-known lower bound for the number of fixed points of a self-map / : X -> X is the Nielsen number N(f). Unfortunately, the Nielsen number is difficult to calculate. The Lefschetz number £(/), on the other hand, is readily computable, but usually does not estimate the number of fixed points.
Edward C. Keppelmann, Christopher McCord
openalex   +3 more sources

Lattices, cohomology and models of six dimensional almost abelian solvmanifolds

open access: green, 2012
We construct lattices on six dimensional not completely solvable almost abelian Lie groups, for which the Mostow condition does not hold. For the corresponding compact quotients, we compute the de Rham cohomology (which does not agree in general with the
Sergio Console, Maura Macrì
openalex   +4 more sources

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