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Dec 14, 2021 at 20:26 history edited dan_fulea CC BY-SA 4.0
Corrections of the displayed diagrams, and some fixes.
Dec 14, 2021 at 20:21 comment added dan_fulea I had to submit, since in the preview most relations were not correctly compiled in mathjax.
Dec 14, 2021 at 20:05 comment added Andromeda Thanks In the meantime, I was able to solve the question myself. Your answer is similar to what I did. The point is that we can check an equality in $\mathscr{U}(G^n)$ by checking that it holds in each component of the associated direct sum.
Dec 14, 2021 at 20:03 vote accept Andromeda
Dec 14, 2021 at 20:03 history bounty ended Andromeda
Dec 14, 2021 at 19:40 history answered dan_fulea CC BY-SA 4.0