Height function
Mathematical functions that quantify complexity / From Wikipedia, the free encyclopedia
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This article is about mathematical functions that quantify complexity. For other uses of height, see Height (disambiguation).
A height function is a function that quantifies the complexity of mathematical objects. In Diophantine geometry, height functions quantify the size of solutions to Diophantine equations and are typically functions from a set of points on algebraic varieties (or a set of algebraic varieties) to the real numbers.[1]
For instance, the classical or naive height over the rational numbers is typically defined to be the maximum of the numerators and denominators of the coordinates (e.g. 7 for the coordinates (3/7, 1/2)), but in a logarithmic scale.