Backward state trajectories given by a continuous backward flow: mathematical definition












0












$begingroup$


Consider the following nonlinear system described by:



$$dot{x}(t)=f(x(t),u(t)),$$



subjected to a constant input that we can describe as:



$$dot{u}(t)=0.$$



It is stated as hypothesis that the system above is assumed to have well-defined backward state trajectories, given by a continuous backward flow.



Now, apart from the intuitive meaning of the previous statement, I was wondering which could be a formal mathematical definition. Any suggestions?










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  • 2




    $begingroup$
    Consider the solution of $dot y=-f(y,u_0)$ such that $y(0)=x_0$.
    $endgroup$
    – Did
    Jan 28 at 21:28
















0












$begingroup$


Consider the following nonlinear system described by:



$$dot{x}(t)=f(x(t),u(t)),$$



subjected to a constant input that we can describe as:



$$dot{u}(t)=0.$$



It is stated as hypothesis that the system above is assumed to have well-defined backward state trajectories, given by a continuous backward flow.



Now, apart from the intuitive meaning of the previous statement, I was wondering which could be a formal mathematical definition. Any suggestions?










share|cite|improve this question









$endgroup$








  • 2




    $begingroup$
    Consider the solution of $dot y=-f(y,u_0)$ such that $y(0)=x_0$.
    $endgroup$
    – Did
    Jan 28 at 21:28














0












0








0





$begingroup$


Consider the following nonlinear system described by:



$$dot{x}(t)=f(x(t),u(t)),$$



subjected to a constant input that we can describe as:



$$dot{u}(t)=0.$$



It is stated as hypothesis that the system above is assumed to have well-defined backward state trajectories, given by a continuous backward flow.



Now, apart from the intuitive meaning of the previous statement, I was wondering which could be a formal mathematical definition. Any suggestions?










share|cite|improve this question









$endgroup$




Consider the following nonlinear system described by:



$$dot{x}(t)=f(x(t),u(t)),$$



subjected to a constant input that we can describe as:



$$dot{u}(t)=0.$$



It is stated as hypothesis that the system above is assumed to have well-defined backward state trajectories, given by a continuous backward flow.



Now, apart from the intuitive meaning of the previous statement, I was wondering which could be a formal mathematical definition. Any suggestions?







ordinary-differential-equations dynamical-systems nonlinear-system






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share|cite|improve this question











share|cite|improve this question




share|cite|improve this question










asked Jan 24 at 8:28









giovanni_13giovanni_13

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757








  • 2




    $begingroup$
    Consider the solution of $dot y=-f(y,u_0)$ such that $y(0)=x_0$.
    $endgroup$
    – Did
    Jan 28 at 21:28














  • 2




    $begingroup$
    Consider the solution of $dot y=-f(y,u_0)$ such that $y(0)=x_0$.
    $endgroup$
    – Did
    Jan 28 at 21:28








2




2




$begingroup$
Consider the solution of $dot y=-f(y,u_0)$ such that $y(0)=x_0$.
$endgroup$
– Did
Jan 28 at 21:28




$begingroup$
Consider the solution of $dot y=-f(y,u_0)$ such that $y(0)=x_0$.
$endgroup$
– Did
Jan 28 at 21:28










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