![](http://www.alamy.com/thumbs/6/F73592DD-79B0-4F23-8FAB-2926F0C5081C/KYMR9F.jpg)
Portrait of Tatiana Ehrenfest, Mathematician 2575986246 o
Size: 1301px × 1921px
Photo credit: © Len Collection / Alamy / Afripics
License: Licensed
Model Released: No
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