A tubular neighborhood of a submanifold 
is an embedding of the normal
bundle (
)
of 
into 
,
i.e., 
,
where the image of the zero section of the normal
bundle is equal to 
.
Tubular Neighborhood
See also
Ball, Embedding, Knot ExteriorThis entry contributed by Ryan Budney
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References
Adams, C. C. The Knot Book: An Elementary Introduction to the Mathematical Theory of Knots. New York: W. H. Freeman, p. 258, 1994.Rolfsen, D. Knots and Links. Wilmington, DE: Publish or Perish Press, pp. 34-35, 1976.Referenced on Wolfram|Alpha
Tubular NeighborhoodCite this as:
Budney, Ryan. "Tubular Neighborhood." From MathWorld--A Wolfram Web Resource, created by Eric W. Weisstein. https://mathworld.wolfram.com/TubularNeighborhood.html