</m:mrow>
</m:mtd>
</m:mtr>
- <xsl:for-each select="piecewise/piece">
+ <xsl:for-each select="m:piecewise/m:piece">
<xsl:variable name="charlength"><xsl:apply-templates select="./*[2]" mode="charcount"><xsl:with-param name="nosibling" select="1"/></xsl:apply-templates></xsl:variable>
<m:mtr>
<m:mtd>
<xsl:apply-templates select="*[position()=3]"/>
<m:mphantom><m:mtext>_</m:mtext></m:mphantom>
<m:mo>OF</m:mo>
- <xsl:for-each select="piecewise/piece">
+ <xsl:for-each select="m:piecewise/m:piece">
<xsl:choose>
<xsl:when test="position() != 1">
<m:mo stretchy="false">|</m:mo>