Browsing by Subject "Wave equations"
Now showing items 1-3 of 3
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Article
Differential invariants for quasi-linear and semi-linear wave-type equations
(2008)In this paper, we consider the class of wave-type equations utt = f (x, t, u) uxx + g (x, t, u, ux, ut) and two special cases of it. We derive the equivalence transformations for these equations and using these transformations, ...
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Conference Object
Note on the distribution of extreme wave crests
(2005)The sea elevation at a fixed point is modelled by means of a second order model, which is a smooth algebraic function of a vector valued Gaussian process. Asymptotic methods, presented first in [1], are used to estimate ...
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Article
The plane waves method for axisymmetric Helmholtz problems
(2016)The plane waves method is employed for the solution of Dirichlet and Neumann boundary value problems for the homogeneous Helmholtz equation in two- and three-dimensional domains possessing radial symmetry. The appropriate ...