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• Disjoint union
  In [[mathematics]], the '''disjoint union''' of two [[set (mathematics)|set]]s ''X'' and ''Y'' is a set which contain ...ction maps'' in₁ and in₂ from ''X'' and ''Y'' to the disjoint union, which are [[injective function]]s with disjoint images.
  2 KB (320 words) - 16:57, 28 November 2008
• Disjoint union/Definition
  135 bytes (25 words) - 15:54, 28 November 2008
• Disjoint union/Related Articles
  896 bytes (143 words) - 15:56, 28 November 2008

Page text matches

• Disjoint union
  In [[mathematics]], the '''disjoint union''' of two [[set (mathematics)|set]]s ''X'' and ''Y'' is a set which contain ...ction maps'' in₁ and in₂ from ''X'' and ''Y'' to the disjoint union, which are [[injective function]]s with disjoint images.
  2 KB (320 words) - 16:57, 28 November 2008
• Union
  * [[Disjoint union]]
  2 KB (264 words) - 17:13, 4 November 2008
• Oxford University Press/Related Articles
  {{r|Disjoint union}}
  1 KB (187 words) - 19:18, 11 January 2010
• Union/Related Articles
  {{r|Disjoint union}}
  908 bytes (144 words) - 13:34, 12 May 2011
• Compactification
  The '''one-point compactification''' of ''X'' is the [[disjoint union]] <math>X^* = X \sqcup \{\omega\}</math> where the [[neighbourhood]]s of ω
  2 KB (350 words) - 00:48, 18 February 2009
• Schröder-Bernstein theorem
  ...union of two sets, ''A''₁ and ''A''₂, and ''B'' the disjoint union of two sets, ''B''₁ and ''B''₂,
  8 KB (1,281 words) - 15:39, 23 September 2013
• Schröder-Bernstein theorem/Citable Version
  ...union of two sets, ''A''₁ and ''A''₂, and ''B'' the disjoint union of two sets, ''B''₁ and ''B''₂,
  8 KB (1,275 words) - 15:34, 23 September 2013
• Hausdorff dimension
  where the union is a disjoint union. The heuristic estimate remains an upper bound if we cannot find a separat
  15 KB (2,549 words) - 09:18, 17 February 2012
• Cardinal number
  For finite cardinals, addition can be defined in terms of [[disjoint union]]s. 2 + 3 is the size of a set obtained by combining a set of size 2 with a where <math>A\sqcup B</math> is the disjoint union of ''A'' and ''B''.
  11 KB (1,808 words) - 17:50, 26 June 2009