Kronecker delta
noun
Kro·neck·er delta ˈkrō-ˌne-kər- 
: a function of two variables that is 1 when the variables have the same value and is 0 when they have different values
Word History
Etymology
Leopold Kronecker †1891 German mathematician
First Known Use
1926, in the meaning defined above
- a lady of leisure
- a lady/man/gentleman of leisure
- a laugh a minute
- a law unto oneself
- a leg to stand on
- a legend in one's own time
- a leopard can't change its spots
- A level
- a license to print money
- a lick and a promise
- a life of leisure
- a light at the end of the tunnel
- a light bulb goes off
- a light bulb goes off in someone's head
- a light bulb goes off/on (in someone's head)
- a light bulb goes on
- a light bulb goes on in someone's head
- a little
- a little bit
- a little goes a long way
- a little something
- a long story
- a long time ago
- a long time coming
- a long way