data/mathoid/273.mml
<math
xmlns="http://www.w3.org/1998/Math/MathML" display="block" alttext="f colon double-struck upper N 1 right-arrow double-struck upper N 1">
<semantics>
<mrow data-semantic-type="punctuated" data-semantic-role="sequence" data-semantic-id="10" data-semantic-children="0,1,9" data-semantic-content="1">
<mi data-semantic-type="identifier" data-semantic-role="latinletter" data-semantic-font="italic" data-semantic-id="0" data-semantic-parent="10">f</mi>
<mo data-semantic-type="punctuation" data-semantic-role="unknown" data-semantic-id="1" data-semantic-parent="10" data-semantic-operator="punctuated">:</mo>
<mrow data-semantic-type="relseq" data-semantic-role="arrow" data-semantic-id="9" data-semantic-children="4,8" data-semantic-content="5" data-semantic-parent="10">
<mrow class="MJX-TeXAtom-ORD">
<msub data-semantic-type="subscript" data-semantic-role="latinletter" data-semantic-id="4" data-semantic-children="2,3" data-semantic-parent="9">
<mrow class="MJX-TeXAtom-ORD">
<mi mathvariant="double-struck" data-semantic-type="identifier" data-semantic-role="latinletter" data-semantic-font="double-struck" data-semantic-id="2" data-semantic-parent="4">N</mi>
</mrow>
<mrow class="MJX-TeXAtom-ORD">
<mn data-semantic-type="number" data-semantic-role="integer" data-semantic-font="normal" data-semantic-id="3" data-semantic-parent="4">1</mn>
</mrow>
</msub>
</mrow>
<mo stretchy="false" data-semantic-type="relation" data-semantic-role="arrow" data-semantic-id="5" data-semantic-parent="9" data-semantic-operator="relseq,→">→
<!-- → -->
</mo>
<mrow class="MJX-TeXAtom-ORD">
<msub data-semantic-type="subscript" data-semantic-role="latinletter" data-semantic-id="8" data-semantic-children="6,7" data-semantic-parent="9">
<mrow class="MJX-TeXAtom-ORD">
<mi mathvariant="double-struck" data-semantic-type="identifier" data-semantic-role="latinletter" data-semantic-font="double-struck" data-semantic-id="6" data-semantic-parent="8">N</mi>
</mrow>
<mrow class="MJX-TeXAtom-ORD">
<mn data-semantic-type="number" data-semantic-role="integer" data-semantic-font="normal" data-semantic-id="7" data-semantic-parent="8">1</mn>
</mrow>
</msub>
</mrow>
</mrow>
</mrow>
<annotation encoding="application/x-tex">f:{\mathbb {N} _{1}}\to {\mathbb {N} _{1}}</annotation>
</semantics>
</math>