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Apparently, this user prefers to keep an air of mystery about them.

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Top posts (78) All Questions Answers | Votes Newest

9 Can a figure 8 be an orbit of $dx /dt =f(x,y)$, $dy/ dt =g(x,y)$ where $f$ and $g$ have continuous partial derivatives with respect to $x$ and $y$? Dec 5 '17
7 Do chaos and/or limit cycles always require the existence of an unstable fixed point? Jan 24 '18
4 LaSalle for time varying systems Nov 29 '18
4 Consider the system $\dot{x}=-y-x^3+x^3y^2, \dot{y}=x-y^3+x^2y^3$ Oct 30 '17
4 Meaning of Observability in LTI systems - how to actually find states. Nov 9 '17
4 differential equations solve for exponents Dec 3 '17
3 Specific number of equilibrium points for a family of DE Nov 27 '17
3 $x''+(x^2+2x'^2-1)x'+x=0$ has a non trivial periodic solution. Dec 13 '17
3 Does a symmetric matrix necessarily have a symmetric square root? Nov 13 '17
3 Exponential stability under global diffeomorphism Oct 1 '17
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