167 lines
3.5 KiB
Plaintext
167 lines
3.5 KiB
Plaintext
created: 20220504124110967
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modified: 20220504124250020
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title: HelloThere
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type: text/vnd.tiddlywiki
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This is a TiddlyWiki plugin for mathematical and chemical typesetting based on KaTeX from Khan Academy.
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It is completely self-contained, and doesn't need an Internet connection in order to work. It works both in the browser and under Node.js.
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! Installation
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To add the plugin to your own wiki, just //drag the following link to your ~TiddlyWiki browser window//.
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[[$:/plugins/tiddlywiki/katex]]
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! Using KaTeX
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The usual way to include ~LaTeX is to use `$$`, as shown in the examples below.
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The underlying KaTeX widget is provided under the name `<$latex>` and is also available under the alias `<$katex>`. It's better to use the generic `<$latex>` name unless you are running multiple ~LaTeX plugins and wish to specifically target KaTeX.
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! Examples - mathematical typesetting
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These examples are taken from [ext[http://khan.github.io/KaTeX/]]
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!! Example 1
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If the text between `$$` contains newlines it will rendered in display mode:
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```
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$$
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f(x) = \int_{-\infty}^\infty\hat f(\xi)\,e^{2 \pi i \xi x}\,d\xi
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$$
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```
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$$
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f(x) = \int_{-\infty}^\infty\hat f(\xi)\,e^{2 \pi i \xi x}\,d\xi
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$$
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!! Example 2
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```
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$$
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\frac{1}{\Bigl(\sqrt{\phi \sqrt{5}}-\phi\Bigr) e^{\frac25 \pi}} = 1+\frac{e^{-2\pi}} {1+\frac{e^{-4\pi}} {1+\frac{e^{-6\pi}} {1+\frac{e^{-8\pi}} {1+\cdots} } } }
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$$
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```
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$$
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\frac{1}{\Bigl(\sqrt{\phi \sqrt{5}}-\phi\Bigr) e^{\frac25 \pi}} = 1+\frac{e^{-2\pi}} {1+\frac{e^{-4\pi}} {1+\frac{e^{-6\pi}} {1+\frac{e^{-8\pi}} {1+\cdots} } } }
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$$
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!! Example 3
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```
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$$
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1 + \frac{q^2}{(1-q)}+\frac{q^6}{(1-q)(1-q^2)}+\cdots = \prod_{j=0}^{\infty}\frac{1}{(1-q^{5j+2})(1-q^{5j+3})}, \quad\quad \text{for }\lvert q\rvert<1.
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$$
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```
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$$
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1 + \frac{q^2}{(1-q)}+\frac{q^6}{(1-q)(1-q^2)}+\cdots = \prod_{j=0}^{\infty}\frac{1}{(1-q^{5j+2})(1-q^{5j+3})}, \quad\quad \text{for }\lvert q\rvert<1.
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$$
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!! Widget Example
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For more flexibility the KaTeX widget can also be used via the full widget syntax:
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```
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<$latex text="f(x) = \int_{-\infty}^\infty\hat f(\xi)\,e^{2 \pi i \xi x}\,d\xi" displayMode="true"></$latex>
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```
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<$latex text="f(x) = \int_{-\infty}^\infty\hat f(\xi)\,e^{2 \pi i \xi x}\,d\xi" displayMode="true"></$latex>
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! ''Error Handling''
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Any LaTeX syntax errors are flagged with the problematic syntax highlighted. For example:
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```
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$$ f(x) = \int_{-\infty}^\infinity\hat f(\xi)\,e^{2 \pi i \xi x}\,d\xi $$
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```
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$$ f(x) = \int_{-\infty}^\infinity\hat f(\xi)\,e^{2 \pi i \xi x}\,d\xi $$
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<hr>
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! Examples - chemical typesetting
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These examples are taken from [ext[https://mhchem.github.io/MathJax-mhchem/]]
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!! Example 1
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```
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$$
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\ce{CO2 + C -> 2 CO}
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$$
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```
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$$
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\ce{CO2 + C -> 2 CO}
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$$
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!! Example 2
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```
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$$
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\ce{Hg^2+ ->[I-] HgI2 ->[I-] [Hg^{II}I4]^2-}
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$$
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```
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$$
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\ce{Hg^2+ ->[I-] HgI2 ->[I-] [Hg^{II}I4]^2-}
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$$
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!! Example 3
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```
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$$
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\ce{x Na(NH4)HPO4 ->[\Delta] (NaPO3)_x + x NH3 ^ + x H2O}
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$$
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```
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$$
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\ce{x Na(NH4)HPO4 ->[\Delta] (NaPO3)_x + x NH3 ^ + x H2O}
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$$
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!! Example 4
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```
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$$
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\ce{A\bond{~--}B\bond{~=}C\bond{-~-}D}
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$$
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```
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$$
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\ce{A\bond{~--}B\bond{~=}C\bond{-~-}D}
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$$
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!! Example 5
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```
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$$
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\ce{Li^x_{Li,1-2x}Mg^._{Li,x}$V$'_{Li,x}Cl^x_{Cl}}
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$$
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```
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$$
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\ce{Li^x_{Li,1-2x}Mg^._{Li,x}$V$'_{Li,x}Cl^x_{Cl}}
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$$
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!! Example 6
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```
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$$
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\ce{Zn^2+ <=>[+ 2OH-][+ 2H+] $\underset{\text{amphoteres Hydroxid}}{\ce{Zn(OH)2 v}}$ <=>[+ 2OH-][+ 2H+] $\underset{\text{Hydroxozikat}}{\ce{[Zn(OH)4]^2-}}$}
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$$
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```
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$$
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\ce{Zn^2+ <=>[+ 2OH-][+ 2H+] $\underset{\text{amphoteres Hydroxid}}{\ce{Zn(OH)2 v}}$ <=>[+ 2OH-][+ 2H+] $\underset{\text{Hydroxozikat}}{\ce{[Zn(OH)4]^2-}}$}
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$$
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