Results 21 to 30 of about 581 (202)

Radiometric Constraints on the Timing, Tempo, and Effects of Large Igneous Province Emplacement

open access: yesGeophysical Monograph Series, Page 27-82., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Jennifer Kasbohm   +2 more
wiley  

+1 more source

Semi-Conformally Flat Singly Warped Product Manifolds and Applications

open access: yesAxioms, 2023
This paper investigates singly warped product manifolds admitting semi-conformal curvature tensors. The form of the Riemann tensor and Ricci tensor of the base and fiber manifolds of a semi-conformally flat singly warped product manifold are provided. It
Samesh Shenawy   +4 more
doaj   +1 more source

On the Geometry of Three-dimensional Pseudo-Riemannian Homogeneous Spaces. I [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Математика. Механика. Информатика, 2020
The problem of establishing links between the curvature and the topological structure of a manifold is one of the important problems of geometry. In general, the purpose of the research of manifolds of various types is rather complicated.
Natal’ya Pavlovna Mozhey
doaj   +1 more source

Canonical Identification at Infinity for Ricci-Flat Manifolds [PDF]

open access: yesThe Journal of Geometric Analysis, 2021
We give a natural way to identify between two scales, potentially arbitrarily far apart, in a non-compact Ricci-flat manifold with Euclidean volume growth when a tangent cone at infinity has smooth cross section. The identification map is given as the gradient flow of a solution to an elliptic equation.
openaire   +3 more sources

On the Geometry of Three-dimensional Pseudo-Riemannian Homogeneous Spaces. II [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Математика. Механика. Информатика, 2020
The problem of establishing links between the curvature and the topological structure of a manifold is one of the important problems of the geometry. In general, the purpose of the research of manifolds of various types is rather complicated.
Mozhey, Natal’ya Pavlovna
doaj   +1 more source

Non-holonomic Kenmotsu manifolds equipped with generalized Tanaka — Webster connection

open access: yesДифференциальная геометрия многообразий фигур, 2021
А non-holonomic Kenmotsu manifold equipped with a connection analogous to the generalized Tanaka — Webster connection, is consid­ered. The studied connection is obtained from the generalized Tanaka — Webster connection by replacing the first structural ...
A.V. Bukusheva
doaj   +1 more source

On Bochner Flat Kähler B-Manifolds

open access: yesAxioms, 2023
We obtain on a Kähler B-manifold (i.e., a Kähler manifold with a Norden metric) some corresponding results from the Kählerian and para-Kählerian context concerning the Bochner curvature. We prove that such a manifold is of constant totally real sectional
Cornelia-Livia Bejan   +2 more
doaj   +1 more source

Asymptotically cylindrical Ricci-flat manifolds [PDF]

open access: yesProceedings of the American Mathematical Society, 2006
Asymptotically cylindrical Ricci-flat manifolds play a key role in constructing Topological Quantum Field Theories. It is particularly important to understand their behavior at the cylindrical ends and the natural restrictions on the geometry. In this paper we show that an orientable, connected, asymptotically cylindrical manifold(M,g)(M,g)with Ricci ...
openaire   +2 more sources

Ricci-Flat Metrics on Vector Bundles Over Flag Manifolds [PDF]

open access: yesCommunications in Mathematical Physics, 2020
AbstractWe construct explicit complete Ricci-flat metrics on the total spaces of certain vector bundles over flag manifolds of the group SU(n), for all Kähler classes. These metrics are natural generalizations of the metrics of Candelas–de la Ossa on the conifold, Pando Zayas–Tseytlin on the canonical bundle over $$\mathbb {CP}^1\times \mathbb {CP}^1 ...
Achmed-Zade, Ismail, Bykov, Dmitri
openaire   +3 more sources

Some notes on the tangent bundle with a Ricci quarter-symmetric metric connection

open access: yesAIMS Mathematics, 2023
Let $ (M, g) $ be an $ n $-dimensional (pseudo-)Riemannian manifold and $ TM $ be its tangent bundle $ TM $ equipped with the complete lift metric $ ^{C}g $.
Yanlin Li, Aydin Gezer, Erkan Karakaş
doaj   +1 more source

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