- #1

Isaac0427

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## Summary:

- Does ##\left[ A, e^B \right]=0## imply ##[A,B]=0##?

## Main Question or Discussion Point

The summary pretty much explains my question. I know that ##\left[ A, e^B \right]=0## if ##[A,B]=0## (and can prove it), but I can't figure out how to prove if it is or is not an "if and only if" statement.

Thanks in advance!

Thanks in advance!