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Difference between revisions of "Linear hull"

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''of a set <img align="absmiddle" border="0" src="https://www.encyclopediaofmath.org/legacyimages/l/l059/l059260/l0592601.png" /> in a vector space <img align="absmiddle" border="0" src="https://www.encyclopediaofmath.org/legacyimages/l/l059/l059260/l0592602.png" />''
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''of a set $A$ in a vector space $E$''
  
The intersection <img align="absmiddle" border="0" src="https://www.encyclopediaofmath.org/legacyimages/l/l059/l059260/l0592603.png" /> of all subspaces containing <img align="absmiddle" border="0" src="https://www.encyclopediaofmath.org/legacyimages/l/l059/l059260/l0592604.png" />. The set <img align="absmiddle" border="0" src="https://www.encyclopediaofmath.org/legacyimages/l/l059/l059260/l0592605.png" /> is also called the subspace generated by <img align="absmiddle" border="0" src="https://www.encyclopediaofmath.org/legacyimages/l/l059/l059260/l0592606.png" />.
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The intersection $M$ of all subspaces containing $A$. The set $M$ is also called the subspace generated by $A$.
  
  
  
 
====Comments====
 
====Comments====
This is also called the linear envelope. The closure of the linear hull of a set <img align="absmiddle" border="0" src="https://www.encyclopediaofmath.org/legacyimages/l/l059/l059260/l0592607.png" /> is called the [[Linear closure|linear closure]] of this set.
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This is also called the linear envelope. The closure of the linear hull of a set $A$ is called the [[Linear closure|linear closure]] of this set.

Revision as of 15:40, 13 July 2014

of a set $A$ in a vector space $E$

The intersection $M$ of all subspaces containing $A$. The set $M$ is also called the subspace generated by $A$.


Comments

This is also called the linear envelope. The closure of the linear hull of a set $A$ is called the linear closure of this set.

How to Cite This Entry:
Linear hull. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Linear_hull&oldid=12870
This article was adapted from an original article by M.I. Voitsekhovskii (originator), which appeared in Encyclopedia of Mathematics - ISBN 1402006098. See original article