In mathematics, the Cauchy–Schwarz inequality is a useful inequality encountered in many different settings, such as linear algebra, analysis, probability theory, and other areas. It is considered to be one of the most important inequalities in all of mathematics. It has a number of generalizations, among them Hölder`s inequality. When viewed .... Found on http://en.wikipedia.org/wiki/Cauchy–Schwarz_inequality
The dot product of two vectors cannot be greater in magnitude than the product of the magnitudes of the vectors. Found on https://www.encyclo.co.uk/local/20687