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Third order superintegrable systems separating in polar coordinates
superintegrable systems polar coordinates
2010/4/2
A complete classification is presented of quantum and classical superintegrable systems in $E_2$ that allow the separation of variables in polar coordinates and admit an additional integral of motion ...
On the Stability Results for Third Order Differential-Operator Equations
Differential-Operator Equations Stability Global asymptotic stabilty
2010/3/5
Sufficient conditions for the stability and the global asymptotic stability of the zero solution of third order linear differential- operator equations are established.