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References to 'closed set'
1. $C^*$-algebra homomorphisms have closed images by asteroid
2. $F_\sigma$ set by rspuzio
3. $T4$ space by matte
4. a closed subset of a complete metric space is complete by ehremo
5. a connected and locally path connected space is path connected by Mathprof
6. a connected normal space with more than one point is uncountable by azdbacks4234
7. a space $\mathnormal{X}$ is Hausdorff if and only if $\Delta(X)$ is closed by mathcam
8. a space is compact iff any family of closed sets having fip has non-empty intersection by CWoo
9. a space is connected under the ordered topology if and only if it is a linear continuum. by dfeuer
10. a space is T1 if and only if every subset A is the intersection of all open sets containing A by waj
11. absolute retract by rspuzio
12. adjunction space by antonio
13. affine variety by mathcam
14. algebraic geometry by archibal
15. algebraic lattice by CWoo
16. almost continuous function by Wkbj79
17. alternative characterizations of Noetherian topological spaces by yark
18. alternative characterizations of Noetherian topological spaces, proof of by yark
19. analytic set by gel
20. analytic sets define a closure operator by gel
21. applications of Urysohn's Lemma to locally compact Hausdorff spaces by azdbacks4234
22. axiom of determinacy by CWoo
23. Borel functional calculus by asteroid
24. boundary / frontier by yark
25. boundary of a closed set is nowhere dense by neapol1s
26. bounded complete by CWoo
27. bounded linear extension of an operator by asteroid
28. Cantor-Bendixson theorem by CWoo
29. circulation and vorticity by perucho
30. clopen subset by mathcam
31. closed graph theorem by Koro
32. closed ideals in $C^*$-algebras are self-adjoint by asteroid
33. closed immersion by djao
34. closed set in a compact space is compact by mathcam
35. closed set in a subspace by yark
36. closed subsets of a compact set are compact by Wkbj79
37. closure by mathwizard
38. closure and interior of Cantor set by rspuzio
39. closure space by CWoo
40. cofinite and cocountable topologies by yark
41. collectionwise normal by mathcam
42. compact element by CWoo
43. compact operator by mhale
44. compact pavings are closed subsets of a compact space by gel
45. compactness and accumulation points of nets by azdbacks4234
46. compactness is preserved under a continuous map by yark
47. completely separated by CWoo
48. completeness under ucp convergence by gel
49. complex analytic manifold by jirka
50. compound interest by CWoo
51. cone in $\mathbb{R}^3$ by pahio
52. continuous geometry by CWoo
53. continuous poset by CWoo
54. continuous relation by CWoo
55. corollary of Banach-Alaoglu theorem by karstenb
56. countable unions and intersections of analytic sets are analytic by gel
57. dense in-itself by rspuzio
58. derivation of Binet formula by drini
59. derivation of properties on interior operation by CWoo
60. development by mathcam
61. diagonal embedding by waj
62. equivalent definitions of analytic sets by gel
63. equivalent formulations for continuity by matte
64. every subspace of a normed space of finite dimension is closed by Mathprof
65. exact trigonometry tables by stevecheng
66. example of Dirac sequence by Johan
67. examples of compact spaces by yark
68. examples of locally compact and not locally compact spaces by AxelBoldt
69. finite complement topology by mathcam
70. finite intersection property by azdbacks4234
71. F\"urstenberg's proof of the infinitude of primes by mathcam
72. Galois connection by CWoo
73. gluing together continuous functions by yark
74. handle decomposition by RobKing
75. Harnack's principle by Mathprof
76. Hausdorff space by yark
77. Hausdorff space not completely Hausdorff by drini
78. Hilbert parallelotope by rspuzio
79. hitting times are stopping times by gel
80. How are normal and T4 spaces defined in books? by Mathprof
81. hyperconnected space by yark
82. infinite Galois theory by djao
83. insertion operation on languages by CWoo
84. integral mean value theorem by me_and
85. invariant forms on representations of compact groups by bwebste
86. invariant subspace problem by asteroid
87. irreducible by mathcam
88. KKM lemma by uriw
89. Krull dimension by mathcam
90. Kuratowski closure-complement theorem by CWoo
91. line segment by matte
92. locally closed by asteroid
93. M. H. Stone's representation theorem by rspuzio
94. meet continuous by CWoo
95. metric space by djao
96. Noetherian topological space by mathcam
97. noncommutative topology by asteroid
98. normal by Koro
99. open mapping by Koro
100. optional process by gel
101. order of a profinite group by mathcam
102. ordered space by CWoo
103. ordered topological vector space by CWoo
104. ordinal space by CWoo
105. partial ordering in a topological space by CWoo
106. places of holomorphic function by pahio
107. polynomial function is a proper map by joking
108. prime spectrum by CWoo
109. product topology by CWoo
110. proof of Banach-Alaoglu theorem by Mathprof
111. proof of Baire space is universal for Polish spaces by gel
112. proof of characterization of connected compact metric spaces. by paolini
113. proof of completeness under ucp convergence by gel
114. proof of equivalent definitions of analytic sets for measurable spaces by gel
115. proof of equivalent definitions of analytic sets for paved spaces by gel
116. proof of equivalent definitions of analytic sets for Polish spaces by gel
117. proof of Heine-Borel theorem by stevecheng
118. proof of hitting times are stopping times for right-continuous processes by gel
119. proof of injective images of Baire space by gel
120. proof of inverse function theorem (topological spaces) by paolini
121. proof of Krein-Milman theorem by georgiosl
122. proof of properties of the closure operator by archibal
123. proof of the d\'ebut theorem by gel
124. proof of Tietze extension theorem by bbukh
125. proof of Urysohn's lemma by scanez
126. proof that a compact set in a Hausdorff space is closed by yark
127. proof that components of open sets in a locally connected space are open by Mathprof
128. properties of compact spaces by rspuzio
129. properties of non-archimedean valuations by rm50
130. properties of the closure operator by matte
131. quotients in $C^*$-algebras by asteroid
132. quotients of Banach algebras by asteroid
133. real analytic subvariety by jirka
134. recession cone by CWoo
135. relationship among different kinds of compactness by rm50
136. scattered space by CWoo
137. scheme by djao
138. semicontinuous by bwebste
139. separated by matte
140. separation axioms by Koro
141. simple interest by CWoo
142. sober space by CWoo
143. something related to Alexandrov one-point compactification by adrianita
144. Sorgenfrey half-open plane by rspuzio
145. spectrum is a non-empty compact set by asteroid
146. Stein manifold by jirka
147. Stone-\v{C}ech compactification by rspuzio
148. support of function by matte
149. T3 space by yark
150. The property that compact sets in a space are closed lies strictly between T1 and T2 by dfeuer
151. the union of a locally finite collection of closed sets is closed by yark
152. theorems on complex function series by pahio
153. thin algebraic set by alozano
154. Thurston's geometrization conjecture by PrimeFan
155. Tietze extension theorem by matte
156. topological complement by asteroid
157. topological group by yark
158. topological space by djao
159. topological vector lattice by CWoo
160. torus by Daume
161. traveling hump sequence by Wkbj79
162. ultraconnected space by yark
163. uncountable Polish spaces contain Cantor space by gel
164. unit disc by PrimeFan
165. Urysohn's lemma by yark
166. von Neumann double commutant theorem by asteroid
167. Zariski topology by djao
168. zero of a function by mathcam
169. zero set of a topological space by CWoo