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From the very beginning of his development, Einstein was very critical of the main results of quantum mechanics. That is why in 1925, when the main papers on matrix mechanics were published, he wrote to his friend Besso 1 as follows: "The most interesting theoretical achievement of recent times is the Heisenberg-Born-Jordan theory of quantum states. A real witchcraft calculus in which infinite determinants (matrices) appear instead of Cartesian coordinates. It is highly witty and, due to its complexity, is insured against proving erroneous." In this connection I wish to say the following. A lot of time has passed since this thought was made. Therefore it makes sense to try to prove that the results of matrix mechanics actually contain defects. In the paper an attempt is made to prove that it is really so.
Altayev Namaz Karabalievich (Wed,) studied this question.