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I suggest a synonym dg-algebras $\to$ differential-graded-algebras.
The tag (dg-algebras) was created in July 2017 (shortly before allowed length of tag names was increased). A short tag-excerpt was also created at the time. The tag (differential-graded-algebras) was created recently (July 2019...
I'm told that $SU(n)$ acts transitively on $S^{2n-1} \subset \mathbb{C}^n$ by matrix multiplication. Yet I can't find a proof of this anywhere, so I was trying to construct a proof on my own by mimicking a version of the proof that I know for showing $SO(n)$ acts transitively on $S^n$.
My proof...
