. . . : (XVI - XX .)
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04 2021

: . . . : (XVI - XX .)

Monographs and books prepared by the Tallinn Research Group
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28 2021

: Monographs, textbooks and books on the theory of cellular automata, computer mathematics systems, computer science, the general theory of statistics, prepared and published by the staff of the Tallinn Research Group in 19952019. Many of these publications are available for free viewing and downloading.

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26 2021

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Spacecraft engine on the effect of gravitational self-acceleration
It is believed that significant reserves of fuel are required to accelerate a spacecraft to high speeds, up to subluminal speeds. However, the limited speed of propagation of gravity leads to the emergence of the relativistic effect of gravitational self-acceleration, when an extended object increases the speed of its motion without the application of an external force to it, the so-called unsupported motion. Conversely, gravitational some acceleration becomes impossible if the speed of propagation of gravity is infinite.


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23 2021

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Cellular Automata: Brief historical survey
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15 2021

: Cellular Automata (CAs) parallel information processing systems that consists of infinity intercommunicating identical Mealy automata (elementary automata). We can interpret CAs as a theoretical basis of artificial high parallel information processing systems. From the logical standpoint a CA is an infinite automaton with specifical internal structure. The CA theory can be considered as structural and dynamical theory of the infinite automata. At that, CA models can serve as an excellent basis for modeling of many discrete processes, representing interesting enough independent objects for research too. Recently, the undoubted interest to the CA problems has arisen anew, and in this direction many remarkable results have been obtained. The CAaxiomatics provides three fundamental properties such as homogeneity, localness and parallelism of functioning. If in a similar computing model we shall with each elementary automaton associate a separate microprocessor then it is possible to unrestrictedly increase the sizesof similar computing system without any essential increase of its temporal and constructive expenses, required for each new expansion of the computing space, and also without any overheads connected to coordination of functioning of an arbitrary supplementary quantity of elementary microprocessors. In the work a brief historical survey of the cellular automata is presented.

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: . CNOT . , . , . - CNOT. A modification of the traditional setup for teleporting the quantum state of a qubit is considered. On the transmitting side, it is changed to the opposite sequence of the CNOT gates and the Hadamard gates. The modified installation allows you to teleport now no longer just an unknown state of the qubit, but a state of entanglement of qubits. On the transmitter side, the installation translates two qubits into a state of entanglement, with the result that, at the receiver side, two qubits also end up in a state of en-tanglement. It is shown also the possibility of direct superluminal transmission of classical information using the gate CNOT



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