Surface with Boundary
A surface with boundary is a topological space obtained by identifying edges and vertices of a set of triangles according to all the requirements of a surface except that certain edges may not be identified with another edge. These edges are called boundary edges and their vertices are called boundary vertices (Henle 1994, p. 129).
Examples of surfaces with boundary include the cylinder and Möbius strip (Henle 1994, pp. 110 and 129).
See also
Cylinder, Möbius Strip, Surface, Topological SpaceExplore with Wolfram|Alpha
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References
Henle, M. A Combinatorial Introduction to Topology. New York: Dover, 1994.Referenced on Wolfram|Alpha
Surface with BoundaryCite this as:
Weisstein, Eric W. "Surface with Boundary." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/SurfacewithBoundary.html