Results 81 to 90 of about 21,501 (172)

Geometry of strings and branes [PDF]

open access: yes, 2002
De elementaire-deeltjesfysica probeert de fundamentele bouwstenen van de Natuur en hun onderlinge wisselwerkingen te beschrijven. Uit experimenten is gebleken dat de elementaire deeltjes in twee klassen zijn onder te brengen: de leptonen, waaronder het ...
Halbersma, Reinder Simon,   +1 more
core  

On locally and globally conformal Kähler manifolds

open access: yes, 1980
Some relations between the locally conformal Kähler (l.c.K.) and the globally conformal Kähler (g.c.K.) properties are established. Compact l.c.K. manifolds which are not g.c.K. do not have Kähler metrics. l.c.K. manifolds which are not g.c.K.
Izu Vaisman
core   +1 more source

Schur’s theorem for nearly Kähler manifolds

open access: yes, 1975
The classical theorem of Schur on Kähler manifolds is generalized to nearly Kähler manifolds, thus solving a conjecture of A. Gray [3, p. 289].
A. M. Naveira, L. M. Hervella
core   +1 more source

Examples of K-unstable Fano manifolds [PDF]

open access: yes, 2019
We examine various examples of horosymmetric manifolds which exhibit interesting properties with respect to canonical metrics. In particular, we determine when the blow-up of a quadric along a linear subquadric admits Kähler-Einstein metrics, providing ...
Delcroix, Thibaut
core   +1 more source

Publication Only

open access: yes
HemaSphere, Volume 9, Issue S1, June 2025.
wiley   +1 more source

Homogeneous Kähler and Hamiltonian manifolds

open access: yes, 2010
12 pages. The statement of Theorem 3.5 has been improved.We consider actions of reductive complex Lie groups $G=K^C$ on Kähler manifolds $X$ such that the $K$--action is Hamiltonian and prove then that the closures of the $G$--orbits are complex-analytic
Christian Miebach   +5 more
core   +1 more source

Twistor forms on Kähler manifolds [PDF]

open access: yes, 2003
International audienceTwistor forms are a natural generalization of conformal vector fields on Riemannian manifolds. They are defined as sections in the kernel of a conformally invariant first order differential operator.
Moroianu, Andrei, Semmelmann, Uwe
core   +1 more source

Remarks on Kähler-Einstein Manifolds

open access: yesNagoya mathematical journal, 1972
Y. Matsushima
semanticscholar   +1 more source

Kähler-Einstein metrics, Bergman metrics, and higher alpha-invariants

open access: yes, 2015
The question of the existence of Kähler-Einstein metrics on a Kähler manifold M has been a subject of study for decades. The Kähler manifolds on which this question may be studied divide naturally into three types. For two of these types the question was
Macbeth, Heather
core  

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