[Math] Symbol for ‘When …’

notation

I have never found one listed anywhere: Is there a symbol for a 'when' condition (example below).

$A=B$ when $A$ is even

Best Answer

This is the same as "If $A$ is even, then $A=B$", or symbolically "$A$ is even $\Rightarrow A=B$". So, if you really wanted to keep the order as you have it, you could write "$A=B \Leftarrow A$ is even", but you run the risk of others not knowing quite what you mean.

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