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Showing 1998 · math.APShow all
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math.AP1998★ 4 cited
On symmetries of KdV-like evolution equations
Artur Sergyeyev
The -dependence of the symmetries of (1+1)-dimensional scalar translationally invariant evolution equations is described. The sufficient condition of (quasi)polynomiality in tim…
math.AP1998★ 1 cited
On Time-Dependant Symmetries of Schroedinger Equation
Arthur G. Sergheyev
We show that the number of symmetry operators of order not higher that q of the nonstationary n-dimensional (n=1,2,3,4) Schroedinger equation (SE) with nonvanishing potentials is f…