Search for dissertations about: "Positivity"
Showing result 1 - 5 of 131 swedish dissertations containing the word Positivity.
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1. Continuity and Positivity Problems in Pseudo-differential Calculus
Abstract : The paper deals with various positivity and continuity questions arising in the Weyl calculus of pseudo-differential operators. Let W be a symplectic vector space. READ MORE
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2. Positive vector bundles in complex and convex geometry
Abstract : This thesis concerns various aspects of the geometry of holomorphic vector bundles and their analytical theory which all, vaguely speaking, are related to the notion of positive curvature in general, and L^2-methods for the dbar-equation in particular. The thesis contains four papers. READ MORE
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3. Continuity and compositions of operators with kernels in ultra-test function and ultra-distribution spaces
Abstract : In this thesis we consider continuity and positivity properties of pseudo-differential operators in Gelfand-Shilov and Pilipović spaces, and their distribution spaces. We also investigate composition property of pseudo-differential operators with symbols in quasi-Banach modulation spaces. READ MORE
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4. Externally positive systems : Analysis and control based on combinatorial polynomials
Abstract : Monotonic tracking is required in many control systems, including those that cannot tolerate any overshoots and undershoots in their closed-loop responses. Classical examples are found in vehicle cruise control and liquid tank level control. READ MORE
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5. Processing affective information after sleep loss
Abstract : It is not fully understood why we need to sleep, although it is evident that sleep loss has consequences for many emotional and cognitive functions. The last couple of decades, sleep researchers have been increasingly devoted to better understand the relationship between sleep and affect. READ MORE