76
AVERAGE VALUES IN A CANONICAL
For , this gives
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(218)
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which agrees with (191).
From (215) we have also
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(219)
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(220)
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In like manner from the identical equation
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(221)
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we get
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(222)
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and
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(223)
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With respect to the kinetic energy similar equations will hold for averages taken for any particular configuration, or for the whole ensemble. But since
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the equation
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(224)
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reduces to
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(225)
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