triangle inequality

Math.1. the theorem that the absolute value of the sum of two quantities is less than or equal to the sum of the absolute values of the quantities.2. the related theorem that the magnitude of the sum of two vectors is less than or equal to the sum of the magnitudes of the vectors.3. (for metric spaces) the related theorem that the distance between two points does not exceed the sum of their distances from any third point.[196065]
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Universalium. 2010.
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triangle inequality — noun Etymology: from its application to the distances between three points in a coordinate system Date: 1941 an inequality stating that the absolute value of a sum is less than or equal to the sum of the absolute values of the terms … New Collegiate Dictionary
triangle inequality — noun Etymology: so called from its application to the distances between three points in a coordinate system : an inequality stating that the absolute value of a sum is less than or equal to the sum of the absolute value of the terms * * * Math. 1 … Useful english dictionary
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