Subadditive set function: Difference between revisions

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== Examples of subadditive functions ==
[[Image:Principle of sigma-subadditivity.svg|thumb|Everyday example of sigma sub-additivity: when sand is mixed with water, the [[bulk volume]] of the mixture is smaller than the sum of the individual volumes, as the water can lodge in the spaces between the sand grains. A similar situation with a different mechanism of action occurs when ethanol is mixed with water, see [[volumeapparent contractionmolar property]].]]