The brilliant mathematician whose critique of quantum mechanics was ignored for nearly forty years.
In short: Grete Hermann was a polymath who laid the foundations for modern computer algebra and challenged the era's leading physicists. Yet, her groundbreaking critique of quantum hidden variables remained buried for decades. Had it been recognized earlier, the history of quantum mechanics might have taken a radically different path.
Born in 1901, Grete Hermann was a trailblazing German mathematician and philosopher. As the first student of Emmy Noether, she published a 1926 thesis that established the existence of algorithms for polynomial ideal theory, a work now considered the foundation of modern computer algebra. Beyond mathematics, she engaged deeply with the era's most prominent physicists, including Werner Heisenberg and Carl Friedrich von Weizsäcker, to reconcile Kantian causality with the emerging, unsettling principles of quantum mechanics.
In 1935, Hermann published a philosophical treatment of quantum mechanics, arguing that the theory did not contradict causality but rather clarified it. Crucially, she identified a flaw in John von Neumann’s 1932 proof, which was widely accepted as demonstrating that hidden variable theories were impossible. Because her work was overlooked by the physics community, this misconception persisted until John Stewart Bell independently discovered the same critique in 1966. Max Jammer finally brought Hermann’s earlier contribution to light in 1974.
Hermann’s life was also defined by her fierce opposition to Nazism. A member of the Internationaler Sozialistischer Kampfbund, she spent years in exile in Denmark and Britain, publishing anti-Nazi articles under pseudonyms. After returning to Germany following World War II, she became a professor and a key figure in the Social Democratic Party, contributing to the influential Bad Godesberg Programme. In her later years, she focused on refining the ethics of her mentor, Leonard Nelson, arguing that moral behavior requires constant, active engagement with the world rather than passive adherence to abstract rules.
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- Summary by Intellect · source: Grete Hermann
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