# Bounding point

In functional analysis, a branch of mathematics, a **bounding point** of a subset of vector space is a conceptual extension of the boundary of the set.

## Definition

Let for some vector space . Then is a *bounding point* for if it is neither an internal point for nor its complement.[1]

## References

- Henry Hermes; Joseph P. La Salle (1969).
*Functional Analysis & Time Optimal Control*. Academic Press. p. 8. ISBN 9780123426505.

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