Results 11 to 20 of about 168 (112)

On low-dimensional solvmanifolds [PDF]

open access: yesAsian Journal of Mathematics, 2016
105 pages, 36 tables; ad v4: References to other papers ...
Bock, Christoph
openaire   +4 more sources

Indefinite Nilsolitons and Einstein Solvmanifolds [PDF]

open access: yesThe Journal of Geometric Analysis, 2022
v2: Presentation improved, bibliography expanded and updated, two missing entries added in Proposition 2.7 and Table 1, Examples 4.11 and 4.19 corrected.
Conti D., Rossi F. A.
openaire   +8 more sources

On complex solvmanifolds and affine structures

open access: yesAnnali di Matematica Pura ed Applicata, 1985
There is a conjecture of \textit{A. Silva} [Rend. Semin. Mat., Torino 1983, Special Issue, 172-192 (1984)] that for the class of compact complex manifolds being affine is equivalent to being a solvmanifold. In this paper the authors show the existence of affine structures on solvmanifolds which satisfy their so-called K-condition.
ALESSANDRINI, Lucia, M. Andreatta
openaire   +5 more sources

Compact CR-solvmanifolds as Kähler obstructions [PDF]

open access: yesMathematische Zeitschrift, 2010
We give a precise characterization for when a compact CR-solvmanifold is CR-embeddable in a complex Kähler manifold. Equivalently this gives a non-Kähler criterion for complex manifolds containing CR-solvmanifolds not satisfying these conditions. This paper is the natural continuation of Oeljeklaus and Richthofer [J Differ Geom 27(3):399-421, 1988] and
Gilligan, Bruce, Oeljeklaus, Karl
openaire   +4 more sources

A six dimensional compact symplectic solvmanifold without Kähler structures [PDF]

open access: yes, 1996
International audienceThe purpose of this paper is to construct a compact symplectic (non-nilpotent) solvmanifold $M^{6} = \Gamma / G$ of dimension $6$ which does not admit Kähler structures.
Saralegi-Aranguren, Martintxo   +2 more
core   +4 more sources

A compact non‐formal closed G2 manifold with b1=1$b_1=1$

open access: yesMathematische Nachrichten, Volume 295, Issue 8, Page 1562-1590, August 2022., 2022
Abstract We construct a compact manifold with a closed G2 structure not admitting any torsion‐free G2 structure, which is non‐formal and has first Betti number b1=1$b_1=1$. We develop a method of resolution for orbifolds that arise as a quotient M/Z2$M/{{\mathbb {Z}}_2}$ with M a closed G2 manifold under the assumption that the singular locus carries a
Lucía Martín‐Merchán
wiley   +1 more source

Dold sequences, periodic points, and dynamics

open access: yesBulletin of the London Mathematical Society, Volume 53, Issue 5, Page 1263-1298, October 2021., 2021
Abstract In this survey we describe how the so‐called Dold congruence arises in topology, and how it relates to periodic point counting in dynamical systems.
Jakub Byszewski   +2 more
wiley   +1 more source

Tachyonic de Sitter Solutions of 10d Type II Supergravities

open access: yesFortschritte der Physik, Volume 69, Issue 7, July 2021., 2021
Abstract Cosmological models of the early or late universe exhibit (quasi) de Sitter space‐times with different stability properties. Considering models derived from string theory, the swampland program does not provide for now a definite characterisation of this stability.
David Andriot
wiley   +1 more source

On Some Structural Components of Nilsolitons

open access: yesMathematical Problems in Engineering, Volume 2021, Issue 1, 2021., 2021
In this paper, we study nilpotent Lie algebras that admit nilsoliton metric with simple pre‐Einstein derivation. Given a Lie algebra η, we would like to compute as much of its structure as possible. The structural components we consider in this study are the structure constants, the index, and the rank of the nilsoliton derivations.
Hulya Kadioglu, Mustafa Inc
wiley   +1 more source

On the rationality of the Nielsen zeta function for maps on solvmanifolds [PDF]

open access: yes, 2022
In [3,9], the Nielsen zeta function $N_f(z)$ has been shown to be rational if $f$ is a self-map of an infra-solvmanifold of type (R). It is, however, still unknown whether $N_f(z)$ is rational for self-maps on solvmanifolds. In this paper, we prove that $
Dekimpe, Karel, Bussche, Iris Van den
core   +1 more source

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