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Symmetry Analysis Of General Rank-3 Pfaffian Systems In Five Variables, Francesco Strazzullo
Symmetry Analysis Of General Rank-3 Pfaffian Systems In Five Variables, Francesco Strazzullo
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
In this dissertation we applied geometric methods to study underdetermined second order scalar ordinary differential equations (called general Monge equations), nonlinear involutive systems of two scalar partial differential equations in two independent variables and one unknown and non-Monge-Ampere Goursat parabolic scalar PDE in the plane. These particular kinds of differential equations are related to general rank-3 Pfaffian systems in five variables. Cartan studied these objects in his 1910 paper. In this work Cartan provided normal forms only for some general rank-3 Pfaffian systems with 14-, 7-, and 6-dimensional symmetry algebra.
In this dissertation we provided normal forms of all general …