Blar i forfatter Doktorgradsavhandlinger (NT-fak) "Kessy, Johnson Allen"
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Cartan-Geometric Approaches to Submaximally Symmetric Ordinary Differential Equations
Kessy, Johnson Allen (Doctoral thesis; Doktorgradsavhandling, 2023-04-12)This thesis is concerned with a symmetry classification problem for ordinary differential equations (ODEs) that dates back to Sophus Lie. We focus on higher order ODEs, i.e. scalar ODEs of order greater than or equal to 4 or vector ODEs of order greater than or equal to 3, up to contact transformations. The maximal contact symmetry algebra dimensions for these ODEs are known. We determine for ...