Sökning: "Matematik 2023"
Visar resultat 1 - 5 av 146 avhandlingar innehållade orden Matematik 2023.
1. Mathematical Multi-Objective Optimization of the Tactical Allocation of Machining Resources in Functional Workshops
Sammanfattning : In the aerospace industry, efficient management of machining capacity is crucial to meet the required service levels to customers and to maintain control of the tied-up working capital. We introduce new multi-item , multi-level capacitated resource allocation models with a medium--to--long--term planning horizon. LÄS MER
2. Causal Combinatorics : Edges of the Characteristic Imset Polytopes
Sammanfattning : Explaining data in a concise and efficient manner has become increasingly important in today's society. This thesis pertains to the problem of finding causal links within data, and how that can be done from a mathematical perspective. Using the framework of graphical models has several advantages, from interpretability to efficiency. LÄS MER
3. Tame representations in Topological Data Analysis: decompositions, invariants and metrics
Sammanfattning : This thesis is a compilation of results that can be framed within the field of applied topology. The starting point of our study is objects presenting a possibly complex intrinsic geometry. The main goal is then to simplify, without trivializing, the geometric information characterising these objects by choosing an appropriate representation. LÄS MER
4. Quiescent regimes in cosmology
Sammanfattning : This thesis is about cosmological solutions to Einstein’s equations of general relativity, in particular spacetimes whose mean curvature diverges. Moreover, we consider anisotropic spacetimes with big bang singularities. In this setting the singularity is expected to generically be oscillatory if no matter is present. LÄS MER
5. The geometry of manifolds with asymptotically flat ends
Sammanfattning : This monograph thesis is divided into two chapters.In the first, "A study of ALF structures", we prove that the structure at infinity of a ALF manifold is essentially unique, i.e. LÄS MER