Consider a closed
composite system consisting of two simple subsystems. Previously
isolated to any interaction, the two subsystems are now brought into
thermal and relations contact, however they are still separated by an
entity barrier. If the entities are individuals this barrier could be a
national, cultural, language, or religious boundary. If the entities
are economic organizations this barrier could be a competitive market
boundary.
At the new equilibrium
the entropy extremum principle requires
where
By the closure
condition
therefore
This expression must
vanish for independent and arbitrary values of E(1) and E(2),
therefore
Which of course implies
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(C) 2005-2014 Wayne M. Angel.
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