Sökning: "composition algebra"
Visar resultat 11 - 14 av 14 avhandlingar innehållade orden composition algebra.
11. Tensor Products on Category O and Kostant's Problem
Sammanfattning : This thesis consists of a summary and three papers, concerning some aspects of representation theory for complex finite dimensional semi-simple Lie algebras with focus on the BGG-category O.Paper I is motivated by the many useful properties of functors on category O given by tensoring with finite dimensional modules, such as projective functors and translation functors. LÄS MER
12. On time-frequency analysis and pseudo-differential operators for vector-valued functions
Sammanfattning : This thesis treats different aspects of time-frequency analysis and pseudodifferential operators, with particular emphasis on techniques involving vector-valued functions and operator-valued symbols. The vector (Banach) space is either motivated by an application as in Paper I, where it is a space of stochastic variables, or is part of a general problem as in Paper II, or arises naturally from problems for scalar-valued operators and function spaces, as in Paper V. LÄS MER
13. Environment support for building structured mathematical models
Sammanfattning : This thesis is about two topics. It describes a high-level programming environment for scientific computing, called ObjectMath, and several contributions to this environment. It also analyses the concept of software development environment architecture, in particular with respect to the ObjectMath environment. LÄS MER
14. Strong Partial Clones and the Complexity of Constraint Satisfaction Problems : Limitations and Applications
Sammanfattning : In this thesis we study the worst-case time complexity of the constraint satisfaction problem parameterized by a constraint language (CSP(S)), which is the problem of determining whether a conjunctive formula over S has a model. To study the complexity of CSP(S) we borrow methods from universal algebra. LÄS MER
