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

Returns a suborder of the given order.

<p><p>

<h3>
Syntax:
</h3>
<pre>os := OrderSubOrder(o);</pre>

<p>

<table>
<tr>
<td>order or boolean</td>
<td><pre>  os  </pre></td>
<td></td>
</tr>
<tr>
<td>order</td>
<td><pre>  o  </pre></td>
<td></td>
</tr>
</table>

<p>


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

<p>

<h3>
Description:
</h3>
If the given order o is an overorder of o|s,
for example o is defined via transformation
(matrix and denominator or matrix and list of ideals;
see <tt> Order</tt>)
over o|s, this order will be returned.
This function
will return <tt> false</tt> if o is an equation order.

<p><p>

<p>
<hr>
<p>
<h3>
Example:
</h3>
Compute suborder o|s of an equation order and of a maximal
overorder. 
<pre>

kash> o:=Order(Z,2,5);
Generating polynomial: x^2 - 5

kash> OrderSubOrder(o);
false
kash> O:=OrderMaximal(o);
   F[1]
    |
   F[2]
  /
 /
Q
F  [ 1]     Given by transformation matrix
F  [ 2]     x^2 - 5
Discriminant: 5 

kash> OrderSubOrder(O);
> Generating polynomial: x^2 - 5
Discriminant: 20 


</pre>

<p>


<hr>

<p>
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