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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Classification of Lagrangian fibrations

Bernard, Ricardo Castaño January 2002 (has links)
No description available.
2

On some constructions of Calabi-Yau manifolds.

January 2004 (has links)
Chan Kwok Wai. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2004. / Includes bibliographical references (leaves 78-81). / Abstracts in English and Chinese. / Chapter 1 --- Introduction to Toric Geometry --- p.7 / Chapter 1.1 --- Definitions of Toric Varieties --- p.7 / Chapter 1.2 --- Properties of Toric Varieties --- p.11 / Chapter 1.2.1 --- Smoothness --- p.12 / Chapter 1.2.2 --- Compactness --- p.12 / Chapter 1.2.3 --- Stratification --- p.13 / Chapter 1.3 --- Divisors on Toric Varieties --- p.14 / Chapter 1.3.1 --- Weil divisors --- p.14 / Chapter 1.3.2 --- Cartier divisors --- p.14 / Chapter 1.4 --- Polarized Toric Varieties --- p.16 / Chapter 2 --- Calabi-Yau Manifolds from Toric Varieties --- p.19 / Chapter 2.1 --- Toric Fano Varieties --- p.19 / Chapter 2.2 --- Calabi-Yau Hypersurf aces in Toric Fano Varieties --- p.23 / Chapter 2.3 --- Computation of Hodge Numbers of Zf --- p.28 / Chapter 2.3.1 --- The results of Danilov and Khovanskii --- p.29 / Chapter 2.3.2 --- "The Hodge number hn-2,1(Zf)" --- p.31 / Chapter 2.3.3 --- "The Hodge number hl,1(zf)" --- p.32 / Chapter 2.4 --- Calabi-Yau Complete Intersections in Toric Fano Va- rieties --- p.34 / Chapter 3 --- Calabi-Yau Manifolds by Quotients --- p.41 / Chapter 3.1 --- Free Group Actions --- p.41 / Chapter 3.2 --- Crepant Resolutions of Orbifolds --- p.44 / Chapter 3.3 --- Examples From Complex Tori --- p.49 / Chapter 3.4 --- Complex Multiplication and Calabi-Yau Threefolds --- p.51 / Chapter 4 --- Calabi-Yau Manifolds by Coverings --- p.56 / Chapter 4.1 --- Cyclic Coverings --- p.56 / Chapter 4.2 --- Admissible Blow-ups --- p.57 / Chapter 4.3 --- Double Covers of P3 Branched Along Octic Arrang- ments --- p.59 / Chapter 4.4 --- The Euler Number of X --- p.61 / Chapter 4.5 --- The Hodge Numbers of X --- p.65 / Chapter 4.6 --- K3-Fibrations and Modularity --- p.69 / Chapter 0 --- Bibliography --- p.78
3

Special Lagrangian geometry

Baier, P. D. January 2001 (has links)
No description available.
4

On families of Calabi-Yau manifolds. / CUHK electronic theses & dissertations collection

January 2003 (has links)
Zhang Yi. / "May 2003." / Thesis (Ph.D.)--Chinese University of Hong Kong, 2003. / Includes bibliographical references (p. 141-146). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Mode of access: World Wide Web. / Abstracts in English and Chinese.
5

Fourier transformation of coisotropic A-branes.

January 2012 (has links)
本論文給出了在鏡像對稱中對非拉格朗日A-膜的Fourier型的變換。 / SYZ構想斷言,鏡像對稱應該來自於一種在卡拉比-丘流形上逐纖維的Fourier-Mukai變換。在半平坦卡拉比-丘流形上的拉格朗日A-膜的情形下,這已經被實現。然而, Kapustin和Orlov指出,對於一些特殊的卡拉比-丘流形, A-膜範疇應該加上某些額外的物件。他們稱這些額外的物件為餘迷向A-膜。在半平坦卡拉比-丘流形的情況下,我們需要加入一些在每個纖維上是楊-米爾斯的A-膜以及B-膜。 / 我們首先推廣Nahm變換到環面上的楊-米爾斯叢。這也可以看作一種Fourier型的變換。然後我們在半平坦卡拉比-丘流形上實施逐纖維的這種Nahm變換。我們在一些半平坦卡拉比丘流形上構造了一些新的B-膜的例子。這些B-膜限制到每一個纖維環面上都是環面上的楊-米爾斯叢。並且我們驗證了在這種逐纖維的變換下,他們恰好就是Kapustin和Orlov所提出的餘迷向A 膜。 / This thesis gives the construction of Fourier type transformations in mirror symmetry for non-Lagrangian A-branes. / The SYZ proposal asserts that mirror symmetry should come from a fiberwise Fourier-Mukai transformation along torus fibrations on Calabi-Yau manifolds. This can be realized explicitly for Lagrangian A-branes in semi-flat case. However, Kapustin and Orlov pointed out that for certain Calabi-Yau manifolds some extra objects called coisotropic A-branes should be added into the category of A-branes. In semi-flat cases, we need to include A-and B-branes which are Yang-Mills along fibers. / We first generalize the Nahm transformation to Yang-Mills line bundles over tori which can also be regarded as a Fourier type transformation. Then we carry out a family version of this transformation for semi-flat Calabi-Yau manifolds. More precisely, we construct a new class of B-branes in semi-flat Calabi-Yau manifolds which are Yang-Mills line bundles when restricted to each fiber torus. And we show that this fiberwise transformation of these B-branes produce the coisotropic A-branes predicted by Kapustin and Orlov. / Detailed summary in vernacular field only. / Detailed summary in vernacular field only. / Detailed summary in vernacular field only. / Zhang, Yi. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2012. / Includes bibliographical references (leaves 61-62). / Abstracts also in Chinese. / Chapter 1 --- Introduction --- p.6 / Chapter 2 --- Fourier-Mukai Transformation --- p.10 / Chapter 2.1 --- A torus case --- p.10 / Chapter 2.1.1 --- Moduli space of flat U(1) bundles over T --- p.11 / Chapter 2.1.2 --- Poincare line bundle P --- p.12 / Chapter 2.1.3 --- Definition of the Fourier-Mukai Transformation for a torus --- p.13 / Chapter 2.1.4 --- Some concrete computations --- p.14 / Chapter 2.2 --- Semi-flat Calabi-Yau case --- p.15 / Chapter 2.2.1 --- Semi-flat Calabi-Yau manifolds and semi-flat branes --- p.15 / Chapter 2.2.2 --- Fourier-Mukai transformation for semi-flat branes --- p.18 / Chapter 3 --- Coisotropic A-branes --- p.23 / Chapter 3.1 --- Why Lagrangian branes are not enough? --- p.23 / Chapter 3.2 --- An example --- p.27 / Chapter 4 --- Nahm transformation --- p.29 / Chapter 4.1 --- Spinor bundle and the Dirac operator --- p.30 / Chapter 4.1.1 --- Clifford algebra and spin group --- p.30 / Chapter 4.1.2 --- Spinor bundle --- p.33 / Chapter 4.1.3 --- Dirac operator --- p.36 / Chapter 4.2 --- Nahm transformation for a torus (T, g) --- p.38 / Chapter 4.3 --- Fourier-Mukai transformation for coisotropic A-branes --- p.53
6

A survey on Calabi-Yau manifolds over finite fields.

January 2008 (has links)
Mak, Kit Ho. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2008. / Includes bibliographical references (leaves 78-81). / Abstracts in English and Chinese. / Chapter 1 --- Introduction --- p.7 / Chapter 2 --- Preliminaries on Number Theory --- p.10 / Chapter 2.1 --- Finite Fields --- p.10 / Chapter 2.2 --- p-adic Numbers --- p.13 / Chapter 2.3 --- The Teichmuller Representatives --- p.16 / Chapter 2.4 --- Character Theory --- p.18 / Chapter 3 --- Basic Calabi-Yau Geometry --- p.26 / Chapter 3.1 --- Definition and Basic Properties of Calabi-Yau Manifolds --- p.26 / Chapter 3.2 --- Calabi-Yau Manifolds of Low Dimensions --- p.29 / Chapter 3.3 --- Constructions of Calabi-Yau Manifolds --- p.32 / Chapter 3.4 --- Importance of Calabi-Yau Manifolds in Physics --- p.35 / Chapter 4 --- Number of Points on Calabi-Yau Manifolds over Finite Fields --- p.39 / Chapter 4.1 --- The General Method --- p.39 / Chapter 4.2 --- The Number of Points on a Family of Calabi-Yau Varieties over Finite Fields --- p.45 / Chapter 4.2.1 --- The Case ψ = 0 --- p.45 / Chapter 4.2.2 --- The Case ψ ß 0 --- p.50 / Chapter 4.3 --- The Number of Points on the Affine Mirrors over Finite Fields --- p.55 / Chapter 4.3.1 --- The Case ψ = 0 --- p.55 / Chapter 4.3.2 --- The Case ψ ß 0 --- p.56 / Chapter 4.4 --- The Number of points on the Projective Mirror over Finite Fields --- p.59 / Chapter 4.5 --- Summary of the Results and Related Conjectures --- p.61 / Chapter 5 --- The Relation Between Periods and the Number of Points over Finite Fields modulo q --- p.67 / Chapter 5.1 --- Periods of Calabi-Yau Manifolds --- p.67 / Chapter 5.2 --- The Case for Elliptic Curves --- p.69 / Chapter 5.2.1 --- The Periods of Elliptic Curves --- p.69 / Chapter 5.2.2 --- The Number of Fg-points on Elliptic Curves Modulo q --- p.70 / Chapter 5.3 --- The Case for a Family of Quintic Threefolds --- p.73 / Chapter 5.3.1 --- The Periods of Xψ --- p.73 / Chapter 5.3.2 --- The Number of F9-points on Quintic Three- folds Modulo q --- p.75 / Bibliography --- p.78
7

Monodromies of torsion D-branes on Calabi-Yau manifolds: extending the Douglas, et al., program

Mahajan, Rahul Saumik 28 August 2008 (has links)
Not available / text
8

Aspects of string theory compactifications

Park, Hyukjae 28 August 2008 (has links)
Not available / text
9

Aspects of string theory compactifications

Park, Hyukjae, Distler, Jacques, January 2004 (has links) (PDF)
Thesis (Ph. D.)--University of Texas at Austin, 2004. / Supervisor: Jacques Distler. Vita. Includes bibliographical references. Also available from UMI.
10

Monodromies of torsion D-branes on Calabi-Yau manifolds extending the Douglas, et al., program /

Mahajan, Rahul Saumik. January 2002 (has links) (PDF)
Thesis (Ph. D.)--University of Texas at Austin, 2002. / Vita. Includes bibliographical references. Available also from UMI Company.

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