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Quaternion Rotations, Claude, and Lean

· John Cook · June 15, 2026, 7:54 p.m.
Math Formal methods Quaternions lean Quaternion Rotations AI in software development Typographical Errors coding practices
Summary
The author discusses an email they received about a typo in a previous post on quaternion and rotation matrix conversion, and their experience using an AI model named Claude to identify the typo instead of doing it manually.
Read full post on www.johndcook.com →
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