Almost period of a function
= Almost period of a function
= Almost period
{synonym}
An almost period of a function $F$ in a normed space is a shift $t$ for which $\|\tau_tF-F\|$ is small.
= Almost period of a function
= Almost period
{synonym}
An almost period of a function $F$ in a normed space is a shift $t$ for which $\|\tau_tF-F\|$ is small.