P5: Guidelines for Electronic Text Encoding and Interchange

<formula notation="TeX">$e=mc^2$</formula>

<formula notation="TeX">$\matrix{0 &amp;amp; 1\cr&amp;lt;0&amp;amp;>1}$</formula>

<p>Achilles runs ten times faster than the tortoise and
gives the animal a headstart of ten meters. Achilles runs
those ten meters, the tortoise one; Achilles runs that
meter, the tortoise runs a decimeter; Achilles runs that
decimeter, the tortoise runs a centimeter; Achilles runs
that centimeter, the tortoise, a millimeter; Fleet-footed
Achilles, the millimeter, the tortoise, a tenth of a
millimeter, and so on to infinity, without the tortoise ever
being overtaken. . . Such is the customary version.

<!-- ... -->
The problem does not change, as you can see; but I would
like to know the name of the poet who provided it with a
hero and a tortoise. To those magical competitors and to
the series
<formula notation="TeX">$$
   {1 \over 10} +
   {1 \over 100} +
   {1 \over 1000} +
   {1 \over 10,\!000} +
   \dots
   $$</formula>
the argument owes its fame.</p>

<p>The volume of a
sphere is given by the formula:
<formula xml:id="f12" n="12" rend="inline">
  <m:math>
   <m:mi>V</m:mi>
   <m:mo>=</m:mo>
   <m:mfrac>
    <m:mrow>
     <m:mn>4</m:mn>
    </m:mrow>
    <m:mrow>
     <m:mn>3</m:mn>
    </m:mrow>
   </m:mfrac>
   <m:mi>π</m:mi>
   <m:msup>
    <m:mrow>
     <m:mi>r</m:mi>
    </m:mrow>
    <m:mrow>
     <m:mn>3</m:mn>
    </m:mrow>
   </m:msup>
  </m:math>
 </formula>
which is readily calculated.</p>
<p>As we have seen in equation
<ptr target="#f12"/>, ... </p>

<formula notation="tex">$E=mc^2$</formula>

<formula notation="none">E=mc<hi rend="sup">2</hi>
</formula>

<formula notation="mathml">
 <m:math>
  <m:mi>E</m:mi>
  <m:mo>=</m:mo>
  <m:mi>m</m:mi>
  <m:msup>
   <m:mrow>
    <m:mi>c</m:mi>
   </m:mrow>
   <m:mrow>
    <m:mn>2</m:mn>
   </m:mrow>
  </m:msup>
 </m:math>
</formula>

<collation>
 <p>
  <formula>1-3:8, 4:6, 5-13:8</formula>
 </p>
</collation>
<collation>
 <p>There are now four gatherings, the first, second and fourth originally consisting of
   eight leaves, the third of seven. A fifth gathering thought to have followed has left no trace.
 <list>
   <item>Gathering I consists of 7 leaves, a first leaf, originally conjoint with <locus>fol. 7</locus>,
       having been cut away leaving only a narrow strip along the gutter; the others, <locus>fols 1</locus>
       and <locus>6</locus>, <locus>2</locus> and <locus>5</locus>, and <locus>3</locus> and <locus>4</locus>,
       are bifolia.</item>
   <item>Gathering II consists of 8 leaves, 4 bifolia.</item>
   <item>Gathering III consists of 7 leaves; <locus>fols 16</locus> and <locus>22</locus> are conjoint,
       the others singletons.</item>
   <item>Gathering IV consists of 2 leaves, a bifolium.</item>
  </list>
 </p>
</collation>
<collation>
 <p>I (1, 2+9, 3+8, 4+7, 5+6, 10); II (11, 12+17, 13, 14, 15, 16, 18, 19).</p>
</collation>
<collation>
 <p>
  <formula>1-5.8 6.6 (catchword, f. 46, does not match following
     text) 7-8.8 9.10, 11.2 (through f. 82) 12-14.8 15.8(-7)</formula>
 </p>
</collation>

<collation>
 <p>
  <formula>1-5.8 6.6 (catchword, f. 46, does not match following text) 7-8.8 9.10, 11.2
     (through f. 82) 12-14.8 15.8(-7)</formula>
  <catchwords>Catchwords are written horizontally in center or towards the right lower
     margin in various manners: in red ink for quires 1-6 (which are also signed in red ink
     with letters of the alphabet and arabic numerals); quires 7-9 in ink of text within
     yellow decorated frames; quire 10 in red decorated frame; quire 12 in ink of text;
     quire 13 with red decorative slashes; quire 14 added in cursive hand.</catchwords>
 </p>
</collation>

<collation>
 <p>
  <formula>1-5.8 6.6 (catchword, f. 46, does not match following text)
     7-8.8 9.10, 11.2 (through f. 82) 12-14.8 15.8(-7)</formula>
  <catchwords>Catchwords are written horizontally in center
     or towards the right lower margin in various manners:
     in red ink for quires 1-6 (which are also signed in red
     ink with letters of the alphabet and arabic numerals);
     quires 7-9 in ink of text within yellow decorated frames;
     quire 10 in red decorated frame; quire 12 in ink of text;
     quire 13 with red decorative slashes; quire 14 added in
     cursive hand.</catchwords>
 </p>
</collation>