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International Conference on Complex Analysis Dedicated to the Memory of Andrei Gonchar and Anatoliy Vitushkin
November 24, 2023 16:10–17:00, Steklov Institute, conference hall, 9th floor
 


Analytical Complexity in the Problem of Signal Coding

V. K. Beloshapka

Lomonosov Moscow State University, Faculty of Mechanics and Mathematics
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V. K. Beloshapka
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Abstract: There are two ways of description of a geometrical object $O$: the object as an image of a mapping and the object as a preimage. Each of the ways has its advantages and disadvantages, and together they give the full picture. To compare the complexity of these descriptions, we can use the approach of Kolmogorov: i.e., after the specification of the system of the basic operations the complexity of the description is the minimal lengths of the defining text. Thus, we obtain the two Kolmogorov complexities: in the first case it is $K^{+}(O)$, and in the second case it is $K^{-}(O)$. Let $Cl^n$ be the class of functions of two variables, such that they can be represented by a superposition of depth not greater than $n$ of analytic functions of one variable and addition, and $K^{+}(Cl^n)$ and $K^{-}(Cl^n)$ be the corresponding Kolmogorov complexities. There are arguments that for $n \geq 2$ the value $K^{-}(Cl^n)$ is very big and the problem of description of $Cl^n$ as a preimage (by defining equations) even for $n =2$ can not be realized computationally. Using this observation, we propose a scheme of coding-decoding of signals, and also we give arguments that the proposed coding scheme can not be decoded with the help of a quantum computer.

Website: https://zoom.us/j/98008001815?pwd=OG1rTVRFRzFpY3RhZmE4MXFwckxMUT09

* ID: 980 0800 1815; Password: 055016
 
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