feat: add normal product eval problem - #4
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Uses the newly formalized Fuglede-Putnam-Rosenblum theorem to state that the product of commuting normal elements in a C*-algebra is normal. Bumps mathlib to include the Fuglede-Putnam-Rosenblum theorem PR. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Summary
50d5513e83cto include the Fuglede-Putnam-Rosenblum theoremmanifests/problems.tomlwith problem metadataTest plan
sorryinNormalProduct.leanis fillable using the Fuglede-Putnam-Rosenblum approach🤖 Prepared with Claude Code