Perturbation theory, mathematical methods that give approximate solutions to problems that cannot be solved exactly
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Perturbation function, mathematical function which relates the primal and dual problems.
Perturbation theory | perturbation theory | Simultaneous perturbation stochastic approximation | Perturbation function | Perturbation (astronomy) | perturbation |
LJJ reacts to the phase discontinuity by bending the Josephson phase in the Institute of Mathematics of the National Academy of Sciences of Ukraine
The perturbation theory of toroidal invariant manifolds of dynamical systems was developed here by academician M. M. Bogolyubov, Yu. O. Mitropolsky, academician of the NAS of Ukraine and the Russian Academy of Sciences, and A. M. Samoilenko, academician of the NAS of Ukraine.
This resembles the Born approximation, in that the details of the problem are treated as a perturbation.
This selection rule arises from a first-order perturbation theory approximation of the time-dependent Schrödinger equation.
In 1970, he gave a plenary lecture at the ICM in Nice (scattering theory and perturbation of continuous spectra).
The presence of the planet was postulated on the basis of the perturbation of the orbit of Uranus by Le Verrier and was observed for the first time only two years earlier.