This [question](https://mathoverflow.net/q/398024/11260) on a theorem in information theory called *Mrs. Gerber's lemma* piqued my curiosity. Who is this individual, and why the "mrs." ? A quick Google search was not informative, although it did produce a Mr. Gerber's lemma ([arXiv:1802.05861](https://arxiv.org/abs/1802.05861)) -- can someone enlighten me?



Who is Mrs. Gerber?
Check out the original reference "A theorem on the entropy of certain binary sequences and applications - I" by Wyner and Ziv: <https://doi.org/10.1109/TIT.1973.1055107>. Footnote 2 on page one explains



> 
> This result is known as “Mrs. Gerber’s Lemma” in honor of a certain lady whose presence was keenly felt by the authors at the time this research was done.
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I'm not sure you're going to get more of an explanation than that.


