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Kronecker delta

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, ij.
Origin of Kronecker delta
First recorded in 1925-30; named after L. Kronecker Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for Kronecker delta

Kronecker delta

(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 δij
Word Origin
named after Leopold Kronecker (1823–91), German mathematician
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
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