Mehtaab Sawhney(@mehtaab_sawhney):We have heard concerns about the proof of the existence of a non-sofic group, particularly its reliance on results of Kun and Kun-Thom. The original lean certificate is end-to-end formalizing every necessary ingredient from those papers. In doing so, we encountered minor imprecisions, which Thom himself describes at the level of typos: https://t.co/0dIdzQn2f7. Such issues are commonplace in the mathematical literature and do not affect the results we cite.

2026.08.05 18:32

We have heard concerns about the proof of the existence of a non-sofic group, particularly its reliance on results of Kun and Kun-Thom. The original lean certificate is end-to-end formalizing every necessary ingredient from those papers. In doing so, we encountered minor imprecisions, which Thom himself describes at the level of typos: Such issues are commonplace in the mathematical literature and do not affect the results we cite.

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