Worked on the apache/commons-math repository, focusing on improving the accuracy and clarity of the FastHadamardTransform.fht() method’s Javadoc. Addressed a documentation bug by correcting typographical errors and refining the explanation of intermediate calculations, ensuring the documentation aligns with internal mathematical expectations. This effort enhanced maintainability and reduced the risk of misinterpretation for developers implementing the FHT algorithm. The work involved code review and documentation skills, with Java as the primary language. No new features were released during this period, as the main contribution centered on supporting onboarding and long-term code quality through precise and consistent technical documentation.