Kronecker delta

American

noun

Mathematics.

a function of two variables, i and j, which equals 1 when the variables have the same value, i = j, and equals 0 when the variables have different values, i ≠ j.

Kronecker delta British

/ ˈkrɒnɪkə /

noun

δij. maths a function of two variables, i and j , that has a value of zero unless i = j , when it has a value of unity

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of Kronecker delta

First recorded in 1925–30; named after L. Kronecker

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023