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TeX Was Invented for Typesetting Math but Is Now Used for Reasoning

The article discusses how TeX, originally created for typesetting mathematical expressions, is now being used by language models to perform mathematical reasoning. When solving complex math problems, models like GLM-5.3 use TeX symbols as part of their reasoning process, even though TeX was never designed for computation. This shift highlights an unexpected application of TeX in modern AI systems.

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PublishedSeptember 28, 2026Keenan Pepper
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WHY IT MAY MATTER

This development shows how AI systems can repurpose existing tools for new tasks, even if they were not originally designed for those purposes.

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