06/12/2022, 12:07 AM
(06/11/2022, 12:27 PM)tommy1729 Wrote: is x [s] f(x) = x
a degree of freedom ?
can we freely choose f(x) and work from there ??
regards
tommy1729
It is a degree of freedom yes, but I would write it using \(\varphi\). So that:
\[
x\,[s]_{\varphi} f(x) = x\\
\]
Then there is some \(\varphi\) where this statement is true (given that \(f\) is reasonably well behaved).

