document: Changes in the entropy and the Tsallis difference information during spontaneous decay and self-organization of nonextensive systems A theoretical-information description of self-organization processes during stimulated transitions between stationary states of open nonextensive systems is presented . S/sub q / - and I/sub q / - theorems on changes of the entropy and Tsallis difference information measures in the process of evolution in the space of control parameters are proved . The entropy and the Tsallis difference information are derived and their new extreme properties are discussed
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