Search for dissertations about: "flag"

Showing result 1 - 5 of 18 swedish dissertations containing the word flag.

  1. 1. Tensor Products of Highest Weight Representations and Skew-Symmetric Matrix Equations A+B+C=0

    University dissertation from Göteborg : University of Gothenburg

    Author : Ida Säfström; Göteborgs universitet.; Gothenburg University.; [2010]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Highest weight respresentation; tensor product decomposition; orthogonal algebra; skew-symmetric matrix; Horn’s conjecture; moment map; coadjoint orbit; flag manifold; general linear algebra; infinite dimensional unitary representation;

    Abstract : The question of characterizing the eigenvalues for the sum of two Hermitian matrices, was solved in 1999, after almost a century of efforts. The saturation conjecture for GL_C(n) was proven by Knutson and Tao, filling in the last gap in Horn’s conjecture. READ MORE

  2. 2. Disconjugate linear ordinary differential equations, flag varieties and classification of symplectic leaves in several Kac-Moody and Gelfand-Dikii algebras

    University dissertation from Stockholm : Stockholm University

    Author : Boris Shapiro; Stockholms universitet.; [1990]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Algebra;

    Abstract : .... READ MORE

  3. 3. Fishing for Females Sensory Exploitation in the Swordtail Characin

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Mirjam Amcoff; Uppsala universitet.; [2013]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Sexual selection; Mate choice; Courtship; Sensory bias; Plasticity; Corynopoma riisei; Mulitiple signalling; Biologi med inriktning mot zooekologi; Biology with specialization in Animal Ecology;

    Abstract : Mate choice plays an important role in sexual selection and speciation. The evolution of mate choice is intriguing in cases where choosy individuals gain little except for genetic material from the mate and where the trait used as a criterion for the choice is costly to its bearer. READ MORE

  4. 4. Connectivity and embeddability of buildings and manifolds

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Kathrin Vorwerk; KTH.; [2014]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : The results presented in is thesis concern combinatorial and topological properties of objects closely related to geometry, but regarded in combinatorial terms. Papers A and C have in common that they are intended to study properties of buildings, whereas Papers A and B both are concerned with the connectivity of graphs of simplicial complexes. READ MORE

  5. 5. Species Limits, and Evolutionary History of Glassfrogs

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Santiago Castroviejo-Fisher; Uppsala universitet.; [2009]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Amphibia; Anura; Biogeography; Centrolenidae; Diversification; Frogs; Molecular Phylogenetics; Neotropics; Pristimantis; Speciation; Species; Systematics; Taxonomy; NATURAL SCIENCES Biology Organism biology Systematics and phylogenetics; NATURVETENSKAP Biologi Organismbiologi Systematik och fylogeni; systematisk zoologi; Systematic Zoology;

    Abstract : Recognizing the mechanisms of speciation and the limits of species is essential to understand the origin of biodiversity and how to conserve it. The general aims of my investigations during my doctoral studies were two-fold: to study evolutionary patterns and processes, and to provide specific and superspecific taxonomic classifications that try to reflect evolutionary history. READ MORE