Size Function
Size functions are shape descriptors, in a geometrical/topological sense. They are functions from the half-plane to the natural numbers, counting certain connected components of a topological space. They are used in pattern recognition and topology.
Read more about Size Function: Formal Definition, History and Applications, Main Properties, Representation By Formal Series
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—Bible: New Testament, Matthew 17:20.
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—Ezra Pound (1885–1972)