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<h2><a name="AlffSUnits"></a>
AlffSUnits
</h2>

Find the S-regulator and a basis
for the free part of the S-units.

<p><p>

<h3>
Syntax:
</h3>
<pre>L := AlffSUnits( S [, "raw" ] );</pre>

<p>

<table>
<tr>
<td>list</td>
<td><pre>  L  </pre></td>
<td>the S-regulator and a basis of S-units</td>
</tr>
<tr>
<td>list</td>
<td><pre>  S  </pre></td>
<td>a list of places</td>
</tr>
</table>

<p>


See also:&nbsp;&nbsp;<a href="kashref.html#AlffClassGroupGens">AlffClassGroupGens</a>, <a href="kashref.html#AlffClassGroup">AlffClassGroup</a>, <a href="kashref.html#AlffInit">AlffInit</a>, <a href="kashref.html#AlffOrdersAlffDivisorReduction">AlffOrdersAlffDivisorReduction</a>, <a href="kashref.html#AlffDivisorLargeLDim">AlffDivisorLargeLDim</a>, <a href="kashref.html#AlffPlacesDegOne">AlffPlacesDegOne</a>

<p>

<h3>
Description:
</h3>
Let F/k be a global function field and S be a set
of places of F/k. This function returns a list L such that
L[1] is the S-regulator and L[2] is a basis for the
free part of the S-unit subgroup of F^\times, consisting
of principal divisors if the option <tt> "raw"</tt> is given.

<p><p>

<p>
<hr>
<p>
<h3>
Example:
</h3>

<pre>

</pre>

<p>


<hr>

<p>
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