# Browse Dissertations and Theses - Mathematics by Contributor "Albrecht, Felix"

• (1989)
Consider the nonlinear, singularly perturbed, vector boundary relation problem x$\sp\prime$ = f(t,x,y,$\epsilon$), $\epsilon$y$\sp\prime$ = g(t,x,y,$\epsilon$), L(x(0),y(0),$\epsilon$) = $\alpha\sb0$, R(x(1),y(1),$\epsilon$) ...

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• (1995)
We consider the Lienard equation of the form$$\ddot x + \epsilon f(x)\dot x + x\sp{2m+1} = 0,\eqno(1)\cr$$which is equivalent to the planar system\eqalignno{\dot x &= y&\enspace\cr \dot{y} &= -x\sp{2m+1} - \epsilon ...

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• (1988)
In Optimal Control Theory, necessary and sufficient conditions for the optimality of a given control, under the assumption that the Bellman function is continously differentiable, can be established by the method of dynamic ...

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