m:unary-arith.class

<xs:group name="unary-arith.class">
  <xs:choice>
    <xs:element ref="m:factorial"/>
    <!--Ambiguous content model altered (minus)-->
    <!--Ambiguous content model altered (root)-->
    <xs:element ref="m:abs"/>
    <xs:element ref="m:conjugate"/>
    <xs:element ref="m:arg"/>
    <xs:element ref="m:real"/>
    <xs:element ref="m:imaginary"/>
    <xs:element ref="m:floor"/>
    <xs:element ref="m:ceiling"/>
    <xs:element ref="m:exp"/>
  </xs:choice>
</xs:group>