Results 11 to 20 of about 796 (142)

Extended Riemannian geometry III: global Double Field Theory with nilmanifolds

open access: yesJournal of High Energy Physics, 2019
We describe the global geometry, symmetries and tensors for Double Field Theory over pairs of nilmanifolds with fluxes or gerbes. This is achieved by a rather straightforward application of a formalism we developed previously.
Andreas Deser, Christian Sämann
doaj   +2 more sources

On generalized Gauduchon nilmanifolds [PDF]

open access: yesDifferential Geometry and its Applications, 2017
We construct invariant generalized Gauduchon metrics on the product of two complex nilmanifolds that do not necessarily admit this kind of metrics. In particular, we prove that the product of a locally conformal Kähler nilmanifold and a balanced nilmanifold admits a generalized Gauduchon metric.
A. Latorre, L. Ugarte, R. Villacampa
openaire   +5 more sources

SKT structures on nilmanifolds

open access: yesMathematische Zeitschrift, 2022
12 ...
Arroyo, Romina Melisa, Nicolini, Marina
openaire   +5 more sources

On the Spectra of Compact Nilmanifolds [PDF]

open access: yesTransactions of the American Mathematical Society, 1985
We show the equivalence of the Howe-Richardson multiplicity formula for compact nilmanifolds and the formula obtained by Corwin and Greenleaf using the Selberg trace formula.
Jeffrey S. Fox
openaire   +3 more sources

A Family of Complex Nilmanifolds with in finitely Many Real Homotopy Types [PDF]

open access: yesComplex Manifolds, 2018
We find a one-parameter family of non-isomorphic nilpotent Lie algebras ga, with a > [0,∞), of real dimension eight with (strongly non-nilpotent) complex structures.
Latorre Adela   +2 more
doaj   +2 more sources

On the Real Homotopy Type of Generalized Complex Nilmanifolds [PDF]

open access: yesMathematics, 2020
We prove that for any n≥4, there are infinitely many real homotopy types of 2n-dimensional nilmanifolds admitting generalized complex structures of every type k, for 0≤k≤n.
Adela Latorre   +2 more
doaj   +2 more sources

Analytic torsion of nilmanifolds with (2, 3, 5) distributions

open access: yesAnalysis and Geometry in Metric Spaces
We consider generic rank two distributions on five-dimensional nilmanifolds and show that the analytic torsion of their Rumin complex coincides with the Ray-Singer torsion.
Haller Stefan
doaj   +2 more sources

On the Analytic Structure of Commutative Nilmanifolds [PDF]

open access: yesThe Journal of Geometric Analysis, 2015
In the classification theorems of Vinberg and Yakimova for commutative nilmanifolds, the relevant nilpotent groups have a very surprising analytic property. The manifolds are of the form $G/K = N \rtimes K/K$ where, in all but three cases, the nilpotent group $N$ has irreducible unitary representations whose coefficients are square integrable modulo ...
Wolf, Joseph A
openaire   +6 more sources

Some remarks on semi-classical analysis\\ on two-step Nilmanifolds [PDF]

open access: yes, 2022
In this paper, we present recent results about the developement of a semiclassical approach in the setting of nilpotent Lie groups and nilmanifolds. We focus on two-step nilmanifolds and exhibit some properties of the weak limits of sequence of densities
Fischer, Véronique   +2 more
core   +4 more sources

Vaisman nilmanifolds [PDF]

open access: yesBulletin of the London Mathematical Society, 2016
We prove that if a compact nilmanifold $Γ\backslash G$ is endowed with a Vaisman structure, then $G$ is isomorphic to the Cartesian product of the Heisenberg group with $\mathbb{R}$.
openaire   +5 more sources

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