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- W4296395708 abstract "The notion of entropy is ubiquitous both in natural and social sciences. In the last two decades, a considerable effort has been devoted to the study of new entropic forms, which generalize the standard Boltzmann-Gibbs (BG) entropy and are widely applicable in thermodynamics, quantum mechanics and information theory. In [23], by extending previous ideas of Shannon [38], [39], Khinchin proposed an axiomatic definition of the BG entropy, based on four requirements, nowadays known as the Shannon-Khinchin (SK) axioms. The purpose of this paper is twofold. First, we show that there exists an intrinsic group-theoretical structure behind the notion of entropy. It comes from the requirement of composability of an entropy with respect to the union of two statistically independent subsystems, that we propose in an axiomatic formulation. Second, we show that there exists a simple universal class of admissible entropies. This class contains many well known examples of entropies and infinitely many new ones, a priori multi-parametric. Due to its specific relation with the universal formal group, the new family of entropies introduced in this work will be called the universal-group entropy. A new example of multi-parametric entropy is explicitly constructed." @default.
- W4296395708 created "2022-09-20" @default.
- W4296395708 creator A5080845237 @default.
- W4296395708 date "2014-07-14" @default.
- W4296395708 modified "2023-10-03" @default.
- W4296395708 title "Beyond the Shannon-Khinchin Formulation: The Composability Axiom and the Universal Group Entropy" @default.
- W4296395708 doi "https://doi.org/10.48550/arxiv.1407.3807" @default.
- W4296395708 hasPublicationYear "2014" @default.
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