We use the Hessian - Weitzenböck formula to simplify the exposition of several well known theorems. We present a uni ed treatment of the theorems of Lichnerowicz - Obata, Reilly and Escobar regarding the rst eigenvalue ...

In this article, we study homogeneous warped product Einstein metrics and their connections with homogeneous Ricci solitons. We show that homogeneous (Λ, n + m)-Einstein manifolds (which are the bases of homogeneous warped ...

Planteo aquí una mirada etnográfica contextualizada de las relaciones epistémicas y cosmológicas entre los territorios y la ancestralidad que están siendo en el caso warpe, las cuales son coartadas por las prácticas de ...

Optical/IR images of transition discs (TDs) have revealed deep intensity decrements in the rings of HAeBes HD 142527 and HD 100453 that can be interpreted as shadowing from sharply tilted inner discs, such that the outer ...

Several mechanisms have been proposed in recent years to explain kinematic decoupled cores (KDCs) in early type galaxies as well as the large differences in angular momentum between KDCs and host galaxy. Most of the proposed ...

We construct a stretched (aka warped) anti-de Sitter black hole in three dimensions supported by a real scalar field configuration. The latter is regular everywhere outside and on the horizon. No-hair theorems in three ...