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Feb 8, 2021 at 8:02 comment added RaphaelB4 I will be happy already with the simple euclidienne metric. And one can think V or W as $\mathbb{R}^n$, $\mathbb{S}^n$ or $\mathbb{T}^n$ if it does make the question simpler.
Feb 7, 2021 at 15:44 answer added Gleb timeline score: 4
Feb 7, 2021 at 13:49 comment added abx $\star$ depends on the metric, so if you want to say anything about $\delta f^*$ you better ask something about $f$.
Feb 7, 2021 at 12:17 history edited Ben McKay CC BY-SA 4.0
application in French is map in English
Feb 7, 2021 at 11:31 history asked RaphaelB4 CC BY-SA 4.0