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This e book introduces systematically the operator approach for the answer of the Schrödinger equation. This method permits to describe the states of quantum methods in the complete selection of parameters of Hamiltonian with a predefined accuracy. The operator strategy is distinctive compared with other non-perturbative techniques owing to its ability to provide in zeroth approximation the uniformly ideal estimate for both floor and thrilled states of quantum system. The strategy has been generalized for the software to quantum stats and quantum industry concept. In this ebook, the quite a few apps of operator process for many bodily techniques are demonstrated. Basic products are employed to illustrate the essential rules of the system which are even more applied for the alternative of elaborate troubles of quantum idea for numerous-particle systems. The results attained are supplemented by numerical calculations, presented as tables and figures.
