Essays about: "Riemannian"
Showing result 1 - 5 of 8 essays containing the word Riemannian.
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1. Spatial Statistical Modelling of Insurance Claim Frequency
University essay from Lunds universitet/Matematisk statistikAbstract : In this thesis a fully Bayesian hierarchical model that estimates the number of aggregated insurance claims per year for non-life insurances is constructed using Markov chain Monte Carlo based inference with Riemannian Langevin diffusion. Some versions of the model incorporate a spatial effect, viewed as the relative spatial insurance risk that originates from a policyholder's geographical location and where the relative spatial insurance risk is modelled as a continuous spatial field. READ MORE
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2. General Relativity and Dynamical Universes
University essay from Uppsala universitet/Teoretisk fysikAbstract : The aim of this report is to explore different models of cosmology, depending on components as matter, radiation and dark energy. To be able to investigate the behaviour and age of these model universes, it is necessary to solve the Friedmann equation. READ MORE
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3. The Existence of Riemannian Metrics on Real Vector Bundles
University essay from Umeå universitet/Institutionen för matematik och matematisk statistikAbstract : In this thesis we present a self-contained proof of the existence of Riemannian metrics on real vector bundles. ... READ MORE
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4. Unstructured mesh adaptation for turbo-machinery RANS computation
University essay from KTH/FlygdynamikAbstract : This paper gives an overview of the mathematical and practical tools that can be used in turbo-machinery RANS simulation to realize unstructured mesh adaptation. It first presents the concept of metric and recalls that the hessian of the physical flow properties can become, thanks to small modifications, both a metric and a upper bound of the P1 projection error. READ MORE
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5. Shortest paths and geodesics in metric spaces
University essay from Institutionen för matematik och matematisk statistikAbstract : This thesis is divided into three part, the first part concerns metric spaces and specically length spaces where the existence of shortest path between points is the main focus. In the second part, an example of a length space, the Riemannian geometry will be given. READ MORE