Indicator Function XMath

indicator_function.xml

<?xml version="1.0" encoding="UTF-8"?>
<?latexml searchpaths="/home/dreamweaver/testbed"?>
<?latexml class="article"?>
<?latexml package="amsmath"?>
<?latexml RelaxNGSchema="LaTeXML"?>
<document xmlns="http://dlmf.nist.gov/LaTeXML">
  <resource src="LaTeXML.css" type="text/css"/>
  <resource src="ltx-article.css" type="text/css"/>
  <para xml:id="p1">
    <equation xml:id="S0.Ex1">
      <Math mode="display" tex="\mathbf{1}_{A}(x):=\begin{cases}1&amp;\text{if }x\in A,\\&#10;0&amp;\text{if }x\notin A.\end{cases}" text="1 _ A * x assign cases@(1, [if ] * x element-of A, 0, [if ] * x not-element-of A)" xml:id="S0.Ex1.m1">
        <XMath>
          <XMApp>
            <XMTok meaning="assign" role="RELOP">:=</XMTok>
            <XMApp>
              <XMTok meaning="times" role="MULOP">⁢</XMTok>
              <XMApp>
                <XMTok role="SUBSCRIPTOP" scriptpos="post2"/>
                <XMTok font="bold" meaning="1" role="NUMBER">1</XMTok>
                <XMTok font="italic" fontsize="70%" role="UNKNOWN">A</XMTok>
              </XMApp>
              <XMDual>
                <XMRef idref="S0.Ex1.m1.5"/>
                <XMWrap>
                  <XMTok role="OPEN" stretchy="false">(</XMTok>
                  <XMTok font="italic" role="UNKNOWN" xml:id="S0.Ex1.m1.5">x</XMTok>
                  <XMTok role="CLOSE" stretchy="false">)</XMTok>
                </XMWrap>
              </XMDual>
            </XMApp>
            <XMDual>
              <XMApp>
                <XMTok meaning="cases"/>
                <XMRef idref="S0.Ex1.m1.1"/>
                <XMRef idref="S0.Ex1.m1.2"/>
                <XMRef idref="S0.Ex1.m1.3"/>
                <XMRef idref="S0.Ex1.m1.4"/>
              </XMApp>
              <XMWrap>
                <XMTok role="OPEN" stretchy="true">{</XMTok>
                <XMArray>
                  <XMRow>
                    <XMCell align="left">
                      <XMTok meaning="1" role="NUMBER" xml:id="S0.Ex1.m1.1">1</XMTok>
                    </XMCell>
                    <XMCell align="left">
                      <XMDual xml:id="S0.Ex1.m1.2">
                        <XMRef idref="S0.Ex1.m1.2.1"/>
                        <XMWrap>
                          <XMApp xml:id="S0.Ex1.m1.2.1">
                            <XMTok meaning="element-of" name="in" role="RELOP">∈</XMTok>
                            <XMApp>
                              <XMTok meaning="times" role="MULOP">⁢</XMTok>
                              <XMText>if </XMText>
                              <XMTok font="italic" role="UNKNOWN">x</XMTok>
                            </XMApp>
                            <XMTok font="italic" role="UNKNOWN">A</XMTok>
                          </XMApp>
                          <XMTok role="PUNCT">,</XMTok>
                        </XMWrap>
                      </XMDual>
                    </XMCell>
                  </XMRow>
                  <XMRow>
                    <XMCell align="left">
                      <XMTok meaning="0" role="NUMBER" xml:id="S0.Ex1.m1.3">0</XMTok>
                    </XMCell>
                    <XMCell align="left">
                      <XMDual xml:id="S0.Ex1.m1.4">
                        <XMRef idref="S0.Ex1.m1.4.1"/>
                        <XMWrap>
                          <XMApp xml:id="S0.Ex1.m1.4.1">
                            <XMTok meaning="not-element-of" name="notin" role="RELOP">∉</XMTok>
                            <XMApp>
                              <XMTok meaning="times" role="MULOP">⁢</XMTok>
                              <XMText>if </XMText>
                              <XMTok font="italic" role="UNKNOWN">x</XMTok>
                            </XMApp>
                            <XMTok font="italic" role="UNKNOWN">A</XMTok>
                          </XMApp>
                          <XMTok role="PERIOD">.</XMTok>
                        </XMWrap>
                      </XMDual>
                    </XMCell>
                  </XMRow>
                </XMArray>
              </XMWrap>
            </XMDual>
          </XMApp>
        </XMath>
      </Math>
    </equation>
  </para>
</document>