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Electronic Journal of Theoretical Physics
Herein is presented a research concerning to the calculation of quantum mean values, for a composite A + B, by using different formulas to expressions in Boltzmann-Gibbs-Shannon's statistics. It is analyzed why matrix formulas with matrices E A and E B , in Hilbert subspaces, produce identical results to full Hilbert space formulas. In accord to former investigations, those matrices are the true density matrices, inside third version of nonextensive statistical mechanics. Those investigationsfatcat:g7wwetnebfar7o7nm7ovhs4naa