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<p>&nbsp;<p>
<hr noshade size="5">
<h2><a name="IdealAutomorphism"></a>
IdealAutomorphism
</h2>

Applies an automorphism to an ideal.

<p><p>

<h3>
Syntax:
</h3>
<pre>B := IdealAutomorphism (A,i);</pre>

<p>

<table>
<tr>
<td>ideal</td>
<td><pre>  B  </pre></td>
<td></td>
</tr>
<tr>
<td>ideal</td>
<td><pre>  A  </pre></td>
<td></td>
</tr>
<tr>
<td>integer</td>
<td><pre>  i  </pre></td>
<td></td>
</tr>
</table>

<p>


See also:&nbsp;&nbsp;<a href="kashref.html#EltAutomorphism">EltAutomorphism</a>, <a href="kashref.html#OrderAutomorphisms">OrderAutomorphisms</a>

<p>

<h3>
Description:
</h3>
Let F be a normal number field with Q-automorphisms
\sigma_1, &hellip; ,\sigma_n and let A be an ideal in F.
The <tt> IdealAutomorphism</tt> function returns the ideal
\sigma_i(A).\smallskip

Before calling <tt> IdealAutomorphism</tt> the automorphisms
\sigma_1, &hellip; ,\sigma_n of F must be computed by the
<tt> OrderAutomorphisms</tt> routine.

<p><p>


<hr>

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