positive definite

positive definite

 
noun Mathematics.
1.
(of a quadratic form) positive for all real values of the variables, where the values are not all zero.
2.
(of a matrix) displaying the coefficients of a positive definite quadratic form.
Origin:
1905–10

Related forms
positive definiteness, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Positive definite is always a great word to know.
So is cube root. Does it mean:
a number that is a multiple of all the denominators of a set of fractions
a quantity of which a given quantity is the cube
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