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Reduced Differential Transform Method for (2+1) Dimensional type of the Zakharov-Kuznetsov ZK(n,n) Equations
In this paper, reduced differential transform method (RDTM) is employed to
approximate the solutions of (2+1) dimensional type of the Zakharov-Kuznetsov
partial differential equations. We apply these method to two examples. Thus, we
have obtained numerical solution partial differential equations of
Zakharov-Kuznetsov. These examples are prepared to show the efficiency and
simplicity of the method
Bifurcation of Fredholm Maps I; The Index Bundle and Bifurcation
We associate to a parametrized family of nonlinear Fredholm maps
possessing a trivial branch of zeroes an {\it index of bifurcation}
which provides an algebraic measure for the number of bifurcation points from
the trivial branch. The index is derived from the index bundle of
the linearization of the family along the trivial branch by means of the
generalized -homomorphism. Using the Agranovich reduction and a
cohomological form of the Atiyah-Singer family index theorem, due to Fedosov,
we compute the bifurcation index of a multiparameter family of nonlinear
elliptic boundary value problems from the principal symbol of the linearization
along the trivial branch. In this way we obtain criteria for bifurcation of
solutions of nonlinear elliptic equations which cannot be achieved using the
classical Lyapunov-Schmidt method.Comment: 42 pages. Changes: added Lemma 2.31 and a reference + minor
corrections. To appear on TMN
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