View source for The real numbers/Infobox

{{Infobox
|style=max-width:35ex;
|title=The real numbers
|above=<div style="max-width:25em;"><span style="font-size:9em;">{{M|\mathbb{R} }}</span></div>
|header1=Algebraic structure
|data1={{XXX|Todo}} - is a [[field]]
|header2=Standard topological structures
|data2=Main page: [[The real line]]''
|label3=[[inner product space|inner product]]
|data3={{M|\langle a,b\rangle:\eq a*b}}<br/> - [[Euclidean inner-product]] on {{M|\mathbb{R}^1}}
|label4=[[Normed space|norm]]
|data4={{M|\Vert x\Vert:\eq\sqrt{\langle x,x\rangle}\eq\vert x\vert}}<br/> - [[Euclidean norm]] on {{M|\mathbb{R}^1}}
|label5=[[Metric space|metric]]
|data5={{M|d(x,y):\eq\Vert x-y\Vert\eq \vert x-y\vert}}<br/> - [[Absolute value]]<br/> - [[Euclidean metric]] on {{M|\mathbb{R}^1}}
|label6=[[Topological space|topology]]
|data6=''[[topology induced by the metric]]'' {{M|d}}
|header7=Standard measure-theoretic structures
|label7=[[measurable space]]
|data7=[[Borel sigma-algebra of the real line|Borel {{sigma|algebra}} of {{M|\mathbb{R} }}]]<ref group="Note">This is just the [[Borel sigma-algebra]] on [[the real line]] (with its usual [[topology]])</ref>
|label8=<nowiki/>
: - other:
|data8=[[Lebesgue-measurable sets of the real line|Lebesgue-measurable sets of {{M|\mathbb{R} }}]]
* contains the Borel {{sigma|algebra}}
}}<noinclude>
The real line discusses {{M|\mathbb{R} }} as a set.
==Notes==
<references group="Note"/>
</noinclude>