 Distinguished limit

A distinguished limit rescales variables so that two or more effects enter the leading asymptotic balance together. It identifies a region whose governing equation differs from the equations in adjacent scales.

The term "distinguished limit" can refer to different concepts depending on the context, particularly in mathematics or analysis. However, it is not a widely recognized or standard term in mathematical literature. It's possible that you might be referring to one of the following ideas: 1. **Limit in Analysis**: In mathematical analysis, the limit of a function or sequence describes the value that it approaches as the input or index approaches some point.