equations1.ocd

<CD xmlns="http://www.openmath.org/OpenMathCD">

<CDComment>

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</CDComment>

<CDName>equations1</CDName>
<CDBase>http://www.openmath.org/cd</CDBase>
<CDDate>2004-02-04</CDDate>
<CDReviewDate>2017-12-31</CDReviewDate>
<CDVersion>1</CDVersion>
<CDRevision>1</CDRevision>
<CDComment>
  Author: Mike Dewar
</CDComment>
<CDStatus>experimental</CDStatus>

<Description> 
Symbols to provide a vocabulary for talking about properties of (systems of)
equations.
</Description>


<CDDefinition>
<Name>linear</Name>
<Description> 
A predicate to indicate that an equation or system of equations is linear,
i.e. is expressed in terms of constants and first order terms.
</Description>

<Example>
<OMOBJ xmlns="http://www.openmath.org/OpenMath">
  <OMA>
    <OMS name="linear" cd="eqn1" />
    <OMA>
      <OMS name="plus" cd="arith1" />
      <OMV name="x"/>
      <OMI>1</OMI>
    </OMA>
  </OMA>
</OMOBJ>
</Example>

</CDDefinition>

<CDDefinition>
<Name>non_linear</Name>
<Description> 
A predicate to indicate that an equation or system of equations is non-linear,
i.e. contains terms of order greater than 1.
</Description>

<Example>
<OMOBJ xmlns="http://www.openmath.org/OpenMath">
  <OMA>
    <OMS name="non_linear" cd="eqn1" />
    <OMA>
      <OMS name="power" cd="arith1" />
      <OMV name="x"/>
      <OMI>2</OMI>
    </OMA>
  </OMA>
</OMOBJ>
</Example>

</CDDefinition>


<CDDefinition>
<Name>sparse</Name>
<Description> 
A predicate to indicate that an equation or system of equations is sparse.
</Description>

<Example>
<OMOBJ xmlns="http://www.openmath.org/OpenMath">
  <OMA>
    <OMS name="sparse" cd="eqn1" />
    <OMV name="eqns"/>
  </OMA>
</OMOBJ>
</Example>

</CDDefinition>


<CDDefinition>
<Name>dense</Name>
<Description> 
A predicate to indicate that an equation or system of equations is dense.
</Description>

<Example>
<OMOBJ xmlns="http://www.openmath.org/OpenMath">
  <OMA>
    <OMS name="dense" cd="eqn1" />
    <OMV name="eqns"/>
  </OMA>
</OMOBJ>
</Example>

</CDDefinition>


</CD>