Help:Displaying a formula: Difference between revisions

 

 

For example, the famous Einstein formula can be entered in raw HTML as <syntaxhighlight lang="html5" inline>{{nowrap|''E'' {{=}} ''mc''²}}</syntaxhighlight>, which is rendered as {{nowrap|''E'' {{=}} ''mc''²}} (the template {{tl|nowrap}} is here only for avoiding a line break inside the formula). With {{tl|math}}, it can be entered as <syntaxhighlight lang="html5" inline>{{math|''E'' {{=}} ''mc''{{sup|2}}}}</syntaxhighlight>, which is rendered as {{math|''E'' {{=}} ''mc''{{sup|2}}}}. With LaTeX, it is entered as <syntaxhighlight lang="html5" inline><math>E=mc^2</math></syntaxhighlight>, and rendered as <math>E=mc^2</math>.

 

==Use of raw HTML==

{{anchor|LaTeX vs. math template}}

 

 

The disadvantages of LaTeX are the following:

On some browser configurations, LaTeX inline formulas appear with a slight vertical misalignment, or with a font size that is slightly different from that of the surrounding text. This is not a problem with a block displayed formula. This is generally also not a real problem with inline formulas that exceed the normal line height (for example formulas with subscripts and superscripts).

Finally, too many LaTeX formulas may significantly increase the processing time of a page. LaTeX formulas should be avoided in image captions, because when the image is clicked for a larger display, LaTeX in the caption will not render.

 

The disadvantages of {{tl|math}} are the following:

 

* Use of {{tl|mvar}} and {{tl|math}} for isolated variables and very simple inline formulas

* Use of {{tl|mvar}} and {{tl|math}} for formulas in image captions, even if the rendering is mediocre

* Use of LaTeX for displayed formulas and more complicated inline formulas

 

The choice between {{tl|math}} and LaTeX depends on the editor. So converting from a format to another one must be done with stronger reasons than editor preference.

=== Display format of LaTeX ===

{{see also|mw:Extension:Math}}

 

The hidden MathML can be used by screen readers and other assistive technology. To display the MathML in Firefox:

 

* Install the [https://addons.mozilla.org/en-US/firefox/addon/native-mathml/ Native MathML] extension

 

In either case, you must have fonts that support MathML ([https://developer.mozilla.org/en-US/docs/Mozilla/MathML_Project/Fonts see developer.mozilla.org]) installed on your system. For copy-paste support in Firefox, you can also install [https://addons.mozilla.org/en-US/firefox/addon/mathml-copy/ MathML Copy].

 

==Use of HTML templates==

{{See also|Wikipedia:Rendering math}}

 

{| class="wikitable"

| {{math|{{abs|''z'' + 1}} &le; 2}}

|}

 

== Fractions ==

 

Fractions can also be made with the TeX, but they do not match the Mediawiki typeface.

 

==General==

=== Special characters ===

 

<nowiki><math>\text {abcdefghijklmnopqrstuvwxyzàáâãäåæçčèéêëìíîïñòóôõö÷øùúûüýÿ}\,</math></nowiki>

 

 

Or, using <code>\mbox</code> instead of <code>\text</code>, pretty much the same:

 

<nowiki><math>\mbox {abcdefghijklmnopqrstuvwxyzàáâãäåæçčèéêëìíîïñòóôõö÷øùúûüýÿ}\,</math></nowiki>

 

 

<math>\text {þ}</math>

 

 

Comparison:

 

<code><nowiki><math> \hat{} \quad \tilde{} \quad \backslash </math></nowiki></code> gives <math> \hat{} \quad \tilde{} \quad \backslash </math>

 

==Functions, symbols, special characters==

 

== Alphabets and typefaces == <!--T:65-->

 

<!--T:66-->

|}

 

 

 

 

|-

|-

|-

|-

|-

|}

 

 

 

== Formatting issues == <!--T:75-->

<!--T:82-->

Also note that if you rely on this workaround, if/when the rendering on the server gets fixed in future releases, as a result of this extra manual offset your formulae will suddenly be aligned incorrectly. So use it sparingly, if at all.

 

==Chemistry==

<math chem><-></math></nowiki>|<math>\longleftrightarrow</math><br/><math chem><-></math>

}}

 

==Examples of implemented TeX formulas==

\end{align}</math></syntaxhighlight>

}}