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Sep 17, 2023 at 3:22 history edited ruler501 CC BY-SA 4.0
Fix missed application to x.
Sep 17, 2023 at 3:21 comment added ruler501 @GerryMyerson good catch I'll fix that.
Sep 17, 2023 at 1:35 comment added Gerry Myerson Do you not want the second $f$ in the displayed inequality to be evaluated at $x$?
Sep 16, 2023 at 9:19 comment added Pietro Majer (and continuous)
Sep 16, 2023 at 9:07 comment added Pietro Majer I would say a necessary and sufficient condition for existence of homeos $\mathbb R\to R$, $y_1,\dots,y_n$, is that $f:\mathbb R^n\times [r,t]\to\mathbb R$ is of bounded variation in each variable $y_1,\dots,y_n$, uniformly on bounded sets. Note that $C$ can be absorbed and put equal to $1.$
Sep 16, 2023 at 6:56 history edited Daniele Tampieri CC BY-SA 4.0
Minor formatting
S Sep 16, 2023 at 4:09 review First questions
Sep 16, 2023 at 6:56
S Sep 16, 2023 at 4:09 history asked ruler501 CC BY-SA 4.0