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Showing 1 to 14 of 14 for “"Fibered"”.
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Singularly Fibered Manifolds
Made available in DSpace on 2014-12-09T22:17:20Z (GMT). No. of bitstreams: 1 6507171.pdf: 6034264 bytes, checksum: 3ff779ab58f8c39c511728e5929c74f8 (MD5) Previous issue date: 1965
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Fibered Calabi -Yau Varieties and Toric Varieties
We consider the problem of constructing K3-fibered and elliptically fibered Calabi-Yau threefolds over P1 and P2 respectively. We first show how to write weighted projective space bundles as toric varieties. We then find necessary and sufficient conditions for the anti-canonical linear systems of …
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Extending the Geometric Tools of Heterotic String Compactification and Dualities
… more general vector bundles on elliptically fibered Calabi-Yau geometries. In particular, we consider the case in which the Calabi-Yau fibration is not in Weierstrass form but can rather contain fibral divisors or multiple sections (i.e., a higher rank Mordell-Weil group). In these cases, …
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Loops and Finite Affine Planes
… between finite affine planes and certain finite fibered loops. We prove that certain finite affine planes must have even prime power order. Finally, we characterize the finite affine translation planes of odd order.
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A ZETA FUNCTION FOR FLOWS WITH L(−1,−1) TEMPLATE
… braid presentations. Here we prove that they are fibered. We investigate their linking and we construct a zeta-function that counts periodic orbits according to their twisting. This extends work by M. Sullivan in [55], and [57].
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A Study on Heterotic Target Space Duality – Bundle Stability/Holomorphy, F-theory and LG Spectra
… we consider TSD theories on elliptically fibered Calabi-Yau manifolds. In this context, each half of the "dual" heterotic theories must in turn have an F-theory dual. Moreover, the apparent relationship between two heterotic compactifications seen in (0,2) heterotic target space dual pairs …
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Veering Triangulations: Theory and Experiment
Certain fibered hyperbolic 3-manifolds admit a layered veering triangulation, which can be constructed algorithmically given the stable lamination of the monodromy. These triangulations were introduced by Agol in 2011, and have been further studied by several others in the years since. In the first …
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Elliptic fibrations among toric hypersurface Calabi-Yau manifolds and mirror symmetry of fibrations
… by (1) constructing explicitly elliptically fibered Calabi-Yau threefolds with large Hodge numbers using Weierstrass model techniques motivated by F-theory, and comparing the Tate-tuned Wierstrass model set with the set of Calabi-Yau threefolds constructed using toric hypersurface methods, …
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The geometry of end-periodic mapping tori
… surface $\Sigma$, we provide a family of closed, fibered hyperbolic manifolds in which $\Sigma$ is totally geodesically embedded, (almost) transverse to the pseudo-Anosov flow, with arbitrarily small systole.
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Classification of base geometries in F-theory
… After we compactify F-theory on elliptically fibered Calabi-Yau manifolds of various dimensions, we produce a large number of minimal supergravity models in six or four spacetime dimensions. In this thesis, I will describe a current classification program of these elliptic Calabi-Yau …
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Spectral systems: new instances and algorithms
… a study of the homology of multi-factored fibered products of topological spaces. We address the coproduct problem for the Cobar construction, and we define an iterated Cobar for higher dimensions using generalized multicomplexes. In addition, we define a generalized filtration on this new …
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Enhanced gauge symmetry in 6D F-theory
… systematic enumeration of all elliptically fibered Calabi-Yau threefolds (EF CY3s) with Hodge number h²,¹ >/= 350; physically, this classifies all F-theory models that lead to low-energy supergravities with >/= 351 neutral hypermultiplets. This result is obtained using global geometric …
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Cycle-Free Twisted Face-Pairing 3-Manifolds
In 2-dimensional topology, quotients of polygons by edge-pairings provide a rich source of examples of closed, connected, orientable surfaces. In fact, they provide all such examples. The 3-dimensional analogue of an edge-pairing of a polygon is a face-pairing of a faceted 3-ball. Unfortunately, …
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An Innovative RAN Architecture for Emerging Heterogeneous Networks: "The Road to the 5G Era"
… infrastructure, which leverages existing fibered and powered facilities associated with a PON-based fiber-to-the-Node/Home (FTTN/FTTH)) residential access network. Due to the sharing of existing valuable fiber assets, the proposed PON-based backhaul architecture, in which the small cells …