Definition:Singular Point/Real/Definition 1
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Definition
Let $C$ be a locus.
A point $P \in C$ is called a singular point if and only if $P$ does not have a unique tangent to $C$ which is itself differentiable.
Also see
- Results about singular points can be found here.
Sources
- 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): singular point (singularity): 2.
- 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): singular point (singularity): 2.
- 2014: Christopher Clapham and James Nicholson: The Concise Oxford Dictionary of Mathematics (5th ed.) ... (previous) ... (next): singular point (singularity)