Search for dissertations about: "equivalence after extension"

Found 2 swedish dissertations containing the words equivalence after extension.

  1. 1. Non-selfadjoint operator functions

    University dissertation from Umeå : Umeå universitet

    Author : Axel Torshage; Umeå universitet.; [2017]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Non-linear spectral problem; numerical range; pseudospectrum; resolvent estimate; equivalence after extension; block operator matrices; operator functions; operator pencil; spectral divisor; joint numerical range; Mathematics; matematik;

    Abstract : Spectral properties of linear operators and operator functions can be used to analyze models in nature. When dispersion and damping are taken into account, the dependence of the spectral parameter is in general non-linear and the operators are not selfadjoint. READ MORE

  2. 2. Laser Diagnostics for Applications to In-Cylinder Engine Investigations

    University dissertation from Division of Combustion Physics, Department of Physics, Lund University

    Author : Robert Collin; Lund University.; Lunds universitet.; [2004]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; LII; Rayleigh scattering; formaldehyde; OH; soot; dimethyl ether; Laser technology; Fysik; Laserteknik; Physics; LIF; Laser diagnostics; combustion engines; Fysicumarkivet A:2004:Collin;

    Abstract : In the work presented in the thesis laser diagnostics was employed primarily in the investigation of engines, but was also used to study soot in flames. Quantitative measurements were performed for visualizing both in-cylinder soot formation and DME sprays in a combustion vessel. READ MORE