Natural Boundary Point

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Natural Boundary Point

 

a singular point of a curve at which the curve terminates. In Figure 1, for example, the origin is a natural boundary point for the curve y = x ln x, since for x < 0 the function In x is not defined for the real numbers.

Figure 1

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The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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