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student:mathematics:intervals [2018/08/26 14:09] – created bernstdhstudent:mathematics:intervals [2019/09/23 17:44] (current) – Changed the symbol for the real numbers bernstdh
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-===== Mathematical Foundations: Intervals =====+===== Intervals =====
  
 ==== Definitions ==== ==== Definitions ====
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 \[ \[
-[a,b] = \{x \in \Re : a \leq x \leq b \}+[a,b] = \{x \in \mathbb{R} : a \leq x \leq b \}
 \] \]
  
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 \[ \[
-(a,b) = \{x \in \Re : a \lt x \lt b \}+(a,b) = \{x \in \mathbb{R} : a \lt x \lt b \}
 \] \]
  
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 \[ \[
-(a,b] = \{x \in \Re : a \lt x \leq b \}+(a,b] = \{x \in \mathbb{R} : a \lt x \leq b \}
 \] \]
  
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 \[ \[
-[a,b) = \{x \in \Re : a \leq x \lt b \}+[a,b) = \{x \in \mathbb{R} : a \leq x \lt b \}
 \] \]