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<p>on fields with additional structure. Basic theorems in analysis hinge on the structural properties of the field of real numbers. Most importantly for algebraic purposes, any field may be used as the <a href="page.php?w=scalar_%28mathematics%29">scalars</a> for a <a href="page.php?w=vector_space">vector space</a>, which is the standard general context for <a href="page.php?w=linear_algebra">linear algebra</a>. <a href="page.php?w=Number_field">Number field</a>s, the siblings of the field of rational numbers, are studied in depth in <a href="page.php?w=number_theory">number theory</a>.</p><p>
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