nLab sitting instant

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Sitting instants

Idea

A function or differential form on a manifold with boundary to a is said to have sitting instants at the boundary if there is an open neighbourhood XUX\partial X \subset U \subset X of the boundary such that the restriction f| Uf|_U of ff to that neighbourhood is locally constant? in the direction perpendicular to the boundary.

References

Last revised on July 23, 2018 at 18:48:58. See the history of this page for a list of all contributions to it.