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When is a quantity additive, and when is it extensive?

Hugo Touchette
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Abstract

The difference between the terms additivity and extensivity, as well as their respective negations, is critically analyzed and illustrated with a few examples. The concepts of subadditivity, pseudo-additivity, and pseudo-extensivity are also defined.

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Hugo Touchette. 2002-01-09. When is a quantity additive, and when is it extensive?. https://doi.org/10.1016/s0378-4371(01)00644-6

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