name or symbol for "anti" Kronecker delta?

Question

Is there a name or symbol convention for what I might call the "anti" Kronecker delta (that is, $1 - \delta_{ij}$)?

score 2 · Answer 1 · answered May 21 '20 at 00:06

2

I don't think there is an agreed upon notation for this. However, you could just define $\gamma_{ij}=1-\delta_{ij}$ if you need to.

answered May 21 '20 at 00:06

AAR

27,833

score 1 · Accepted Answer · answered May 21 '20 at 08:20

1

You could use the Inverson bracket. If $P$ is a property, then $$ [P] = \begin{cases} 1 &\text{if $P$ is true}\\ 0 &\text{otherwise} \end{cases} $$ Thus, in your case, $[i \not= j]$.

answered May 21 '20 at 08:20

J.-E. Pin

43,443

name or symbol for "anti" Kronecker delta?

2 Answers2