Meanings
- mathematicsThe theorem that states that a simple closed curve (Jordan curve) divides the plane into precisely two distinct areas.
There is a vast generalization of the Jordan curve theorem to higher dimensions.
1995, William Fulton, Algebraic Topology: A First Course, Springer, page 3432 more examples
The Jordan curve theorem asserts that a simple closed curve in the complex plane divides the plane into exactly two connected components, one bounded (the "inside") and the other unbounded (the "outside" ).
2001, Theodore Gamelin, Complex Analysis, Springer, page 249The principal reason that orbit behavior in the plane is more limited than in higher dimensions is the Jordan curve theorem. Local sections will be the primary tool used to exploit the Jordan curve theorem.
2004, Nelson G. Markley, Principles of Differential Equations, Wiley, page 193 - Used other than figuratively or idiomatically: see Jordan curve, theorem.
1 more example
2009, Josef Šlapal, Jordan Curve Theorems with Respect to Certain Pretopologies on ℤ², Srecko Brlek, Christophe Reutenauer, Xavier Provençal (editors), Discrete Geometry for Computer Imagery: 15th IAPR International Conference, Springer, LNCS 5810, page 252, Some known Jordan curves in the basic topology are used to prove Jordan curve theorems that identify Jordan curves among simple closed ones in each of the four quotient pretopologies.
Cite this entry
Jordan curve theorem. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/Jordan%20curve%20theorem
“Jordan curve theorem.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Jordan%20curve%20theorem. Accessed November 5, 2026.
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