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The outline of this thesis is as follows: in chapter 2, we study two different problems which describe the wave propagation in shallow water. In the first, we investigated the analytical solutions of the linear shallow water equations and studied some properties such as dispersion relation, stability and conservation laws. In the second, The Painle...
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Local growth and decay estimates near the stationary point at the origin are derived in § 3 for solutions of the vector system,
(1)
where A(x) and B(y) are homogeneous of degree m > 1 in the components of x and y , respectively, and f* and g* are of order greater than m in ‖( x, y )‖ near the origin. It is assumed that x = 0 is asymptotically stable and y = 0 is asymptotically unstable for the homogeneous systems of first approximation,
(2)
In order to derive the estimates in § 3, various results are needed concerning solutions of a homogeneous system such as (2) (a). These are derived in § 2 and are based on work of Hahn [ 4; 5 ], Lefschetz [ 8 ], and Zubov [ 12 ].