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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 20 of 93 for “"Tori"”.
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THE INDEX THEOREM FOR QUASI-TORI
… theorem for holomorphic line bundles on complex tori asserts that some cohomology groups of a line bundle vanish according to the numbers of negative and positive eigenvalues of the associated hermitian form. In this thesis, this theorem is generalized to quasi-tori, i.e. connected complex …
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The geometry of end-periodic mapping tori
Let $S$ be a boundaryless infinite-type surface with finitely many ends and consider an end-periodic homeomorphism $f$ of S. The end-periodicity of $f$ ensures that $M_f$, its associated mapping torus, has a compactification as a $3$-manifold with boundary; further, if $f$ is atoroidal, then $M_f$ …
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Hypercube diagrams for knots, links, and knotted tori
… diagrams, which represent immersed Lagrangian tori in R^4 to study embedded Legendrian tori in the standard contact space. We then show how to compute one of the classical invariants, the rotation class, and discuss applications to contact homology.
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Isometries of a Torus and Geometric Equivalence of Tori
No abstract prepared.
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Toroidal Matrix Links: Local Matrix Homotopies and Soft Tori
… some techniques from matrix geometry, combinatorial optimization and noncommutative topology developed by Loring [24, 27], Shulman [27], Bhatia [2], Chu [8], Brockett [5], Choi [7, 6], Effros [6], Exel [11], Eilers [11], Elsner [12], Pryde [31, 30], McIntosh [30] and Ricker [30].
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A Newton Method For The Continuation Of Invariant Tori
… of this method is to locate invariant tori of continuous systems. These tori occur for continuous dynamical systems having quasiperiodic orbits in state space. The discretization of the continuous system in terms of a map is accomplished in terms of its flow function. Results for …
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Ricci Curvature of Noncommutative Three Tori, Entropy, and Second Quantization
… calculus for the noncommutative tori, we explicitly compute the second density of the heat trace expansion for the perturbed Laplacians on both functions and $1-$forms. On the other hand, in noncommutative geometry one also wants to get a good notion of an action functional which …
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Models of Dust and Gas Tori in Active Galactic Nuclei
… with the help of three-dimensional clumpy tori, calculated in a second step. Special emphasis is put on the differences of clumpy and continuous dust distributions, also concerning interferometric observations. In a further step, we apply hydrodynamic simulations to trace the evolution of a …
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Dynamics of Symplectic Piecewise Affine Elliptic Rotation Maps on Tori
We investigate the iterative dynamics of symplectic piecewise-affine elliptic rotation maps associated with matrices with non-integer entries, 0-11a , where -2 < a < 2. We explain how their singularity and periodicity structures develop in general. In a special case, a = +/- 2 , we completely …
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Distinguishing open symplectic mapping tori via their wrapped Fukaya categories
… towards the classification of symplectic mapping tori. More precisely, we exploit the dynamics of wrapped Fukaya categories to distinguish an open version of symplectic mapping torus associated to a symplectomorphism from the mapping torus of the identity. As an application, we obtain pairs of …
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Circumplanetary dust dynamics : application to Martian dust tori and Enceladus dust plumes
… vicinity and can form extended dust envelopes, tori or rings around them. A fascinating example of these complexes are Saturnian rings containing a wide range of particles sizes from house-size objects in the main rings up to micron-sized grains constituting the E ring. Other example are ring …
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Primitive Tori in einfachen spaltenden Gruppen und ihre Fixpunkte im Bruhat-Tits Gebäude
… G eine explizite Beschreibung der zugehörigen Tori in Termen von Erzeugern und polynomialen Relationen liefert. Wir erhalten als Resultat, daß die Fixpunktmenge des Torus, der zur Coxeterklasse assoziiert ist, in einer Kammer des Gebäudes enthalten ist. Für Tori, die nicht zur Coxeterklasse …
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Unpopular Meters: Irregular Grooves and Drumbeats in the Songs of Tori Amos, Radiohead, and Tool
… explaining metric trends broadly within a historically situated genre, my research also highlights the metric idiolects of Tori Amos, Radiohead, and Tool. The dissertation comprises three parts. Part I establishes my theoretical position and methodological framework. In Chapter 1, I stress the …
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"Purple People": "Sexed" Linguistics, Pleasure, and the "Feminine" Body in the Lyrics of Tori Amos
<p>The notion of a “feminine” style has been staunchly resisted by third-wave feminists who argue that to posit a “feminine” style is essentialist. Yet, linguists such as Norma Mendoza-Denton and Elinor Ochs discuss indexicality and shifting through <em>salient variables</em>, a process called …
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Analytical and Computational Tools for the Study of Grazing Bifurcations of Periodic Orbits and Invariant Tori
… of periodic and quasiperiodic grazing trajectories in an impacting mechanical system. A local analysis based on the discontinuity-mapping approach is employed to derive a normal-form description of the dynamics near a grazing trajectory. Also, the results obtained using the …
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A gendered musicological study of the work of four leading female singer-songwriters: Laura Nyro, Joni Mitchell, Kate Bush, and Tori Amos
… namely Laura Nyro, Joni Mitchell, Kate Bush and Tori Amos, whose songs are analyzed as textual entities. Building a theoretical bridge between musicology and feminist theory, the relationship between the text and the body is examined. The discursive perspective of this research allows pieces of …
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Hopf bifurcations in magnetoconvection in the presence of sidewalls
… of secondary Hopf bifurcations of invariant tori from the SW solutions. We prove that the tori persist in 'wedges' in the parametric plane. In Case II we show that there are also secondary Bogdanov-Takens bifurcation points. Using this, we show there are additional secondary and tertiary …
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Rory lines : silver lining for seabirds in South Africa's demersal trawl fisheries
… warps (the cables used to tow the trawl net). Tori (bird-scaring) lines have been used to decrease seabird mortality in some trawl fisheries by up to 90%. However, tori lines are not effective at reducing the number of birds that drift towards the trawl warps while feeding on factory discards …
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Strange Attractors of Uniform Flows (Cantor Set, Solenoid)
… sequence of positively invariant open solid tori. Necessary and sufficient conditions related to these tori are derived for an arbitrary set to be an orbitally stable attractor. When the cross-section of an orbitally stable attractor is a Cantor set, then first return map is found to be …
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