conical neighborhood

Let $V$ be a real (or complex) topological vector space and $X$ a subset of $V$. A conical neighborhood of $X$ is a cone in $V$ which is a neighborhood of $X$.

In the theory of pseudodifferential operators and in microlocal analysis, we have to consider conical neighborhood of vectors located in some fiber of a vector bundle.

Title	conical neighborhood
Canonical name	ConicalNeighborhood
Date of creation	2013-03-22 15:19:33
Last modified on	2013-03-22 15:19:33
Owner	urelement (1799)
Last modified by	urelement (1799)
Numerical id	7
Author	urelement (1799)
Entry type	Definition
Classification	msc 46A55
Synonym	conic neighborhood
Defines	conical neighborhood