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extended_real_number_line [2013/08/16 15:27]
nikolaj
extended_real_number_line [2014/03/21 11:11]
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-===== Extended real number line ===== 
-==== Definition ==== 
-| @#55EE55: $ \overline{\mathbb R} \equiv \mathbb R\cup\{-\infty,​\infty\} $ | 
  
->todo: model $-\infty$ and $\infty$ 
- 
-==== Ramifications ==== 
-=== Reference === 
-Wikipedia: [[http://​en.wikipedia.org/​wiki/​Extended_real_number_line|Extended real number line]] 
- 
-==== Context ==== 
-Set 
-=== Requirements === 
-[[Real number]] 
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