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

Given a divisor this function returns the algebraic function field
it belongs to.

<p><p>

<h3>
Syntax:
</h3>
<pre>F := AlffDivisorAlff(D);</pre>

<p>

<table>
<tr>
<td>algebraic function field</td>
<td><pre>  F  </pre></td>
<td></td>
</tr>
<tr>
<td>alff divisor</td>
<td><pre>  D  </pre></td>
<td></td>
</tr>
</table>

<p>


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

<p>

<h3>
Description:
</h3>
<i>no detailed description available yet</i>

<p><p>

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

<pre>

kash> AlffInit(FF(2,1));
"Defining global variables: k, w, kT, kTf, kTy, T, y, AlffGlobals"
kash> F := Alff(y^3+T^3*y+T);
Algebraic function field defined by
.1^3 + .1*.2^3 + .2
over
Univariate rational function field over GF(2)
Variables: T

kash> P := AlffPlaceSplit(F, T+1)[1];
Alff place < [ T + 1, 0, 0 ] >
kash> D := AlffDivisor(P);
Alff divisor
[ [ Alff place < [ T + 1, 0, 0 ] >, 1 ] ]

kash> AlffDivisorAlff(D);
> Algebraic function field defined by
.1^3 + .1*.2^3 + .2
over
Univariate rational function field over GF(2)
Variables: T


</pre>

<p>


<hr>

<p>
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