Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"Einstein Metrics"”.
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Einstein metrics on piecewise-linear three-spheres
1 PDF file (viii, 31 pages)
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N-Bakry Emery Ricci Curvature & N-Quasi Einstein Metrics
… N-Bakry- Émery Ricci curvature and the N-quasi Einstein metric. The main results in this thesis are related to the N-Bakry-Émery Ricci curvature and the N-quasi Einstein metric.</p> <p>Our first set of main results are as follows. We generalize topological results known for noncompact manifolds …
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N-bakry Emery Ricci Curvature & N-quasi Einstein Metrics
… N-Bakry- Émery Ricci curvature and the N-quasi Einstein metric. The main results in this thesis are related to the N-Bakry-Émery Ricci curvature and the N-quasi Einstein metric.</p><p>Our first set of main results are as follows. We generalize topological results known for noncompact manifolds …
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Higher canonical asymptotics of Kähler-Einstein metrics on quasi-projective manifolds
… derive the asymptotic expansion of the Kiihler-Einstein metrics on certain quasi-projective varieties, which can be compactified by adding a divisor with simple normal crossings. The weighted Cheng-Yau Hilder spaces and the log-filtrations based on the bounded geometry are introduced to …
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Stability of Einstein Manifolds
This thesis deals with Einstein metrics and the Ricci flow on compact mani- folds. We study the second variation of the Einstein-Hilbert functional on Ein- stein metrics. In the first part of the work, we find curvature conditions which ensure the stability of Einstein manifolds with respect to the …
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Anti-self-dual fields and manifolds
… the relationship between anti–self–dual Einstein metrics with non–null symmetry in neutral signature and pseudo–, para– and null–Kähler metrics. We classify real–analytic anti–self–dual null–Kähler metrics with a Killing vector that are conformally Einstein. This allows us to formulate a …
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Positive Sasakian Structures on Links of Weighted Complete Intersection Singularities
… structure. Since it is known that Sasaki-Einstein metrics have positive Ricci curvature, and since positive Sasakian structures give rise to Sasakian metrics with positive Ricci curvature, it is useful to determine which links have a positive Sasakian structure. This corresponds to the …
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On the Classification of Enriques Surfaces
… of K3 surfaces, as well as their moduli space of Einstein metrics, we provide short, independent proofs of the results concerning Enriques surfaces which taken together fully classify this important class of compact complex surface of Kodaira dimension 0. We conclude by extending the above …
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Dynamic alpha-invariants of del Pezzo surfaces with boundary
… alpha-invariant can be equipped with a Kahler-Einstein metric. In recent years Donaldson drafted a programme to determine when a smooth Fano variety X admits a Kahler-Einstein metric. It was conjectured that the existence of such a metric is equivalent to X being K-stable, an …
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Ricci-flat deformations of orbifolds and asymptotically locally Euclidean manifolds
… Ricci-flat deformations of Ricci-flat Kähler metrics on compact orbifolds and asymptotically locally Euclidean(ALE) manifolds. In both cases we also study the moduli space of Ricci-flat structures. For this purpose, it is convenient to assume that the initial Ricci-flat metrics are Kähler. Our …