Tatyana Alexeyevna Afanasyeva-Ehrenfest (née Afanasyeva; Russian: Татьяна Алексеевна Афанасьева-Эренфест; 19 November 1876 – 14 April 1964) was a Russian-Dutch mathematician and physicist who made contributions to the fields of statistical mechanics and statistical thermodynamics with her husband Paul Ehrenfest.
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