Inner variable
= Inner variable
{title2=$\xi$}
An inner variable is a stretched coordinate such as $\xi=(x-x_0)/\delta(\epsilon)$ that remains order one inside a thin region of width $\delta(\epsilon)$.
= Inner variable
{title2=$\xi$}
An inner variable is a stretched coordinate such as $\xi=(x-x_0)/\delta(\epsilon)$ that remains order one inside a thin region of width $\delta(\epsilon)$.