Freek's 100 formalization challenges completed after 20 years, with Anthropic's model closing the final theorem
latticecut · x · 2026-09-05
A milestone for formal mathematics: the final theorem in Freek Wiedijk's famous list of 100 formalization challenges has been formalized, wrapping up the roughly two-decade-old benchmark. The poster credits Anthropic's model with the completion.
The author argues that verification and formalization at this scale can only lead to new areas of understanding and downstream applications, calling the coming industrialization of maths and science something to behold.
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