Difference between revisions of "Math/basic"
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| − | + | = Binary Operators Relations= | |
Basic binary symbols can be produced by typing the correspoding keyboard character. These include | Basic binary symbols can be produced by typing the correspoding keyboard character. These include | ||
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| − | == Greek Letters | + | = Integrals and Sums= |
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| + | = Greek Letters = | ||
To type the greek character ''α'' you can say <code>$\alpha$</code> which gives <context>$\alpha$</context>. If you have a utf enabled keyboard, you can also type the α directly and ConTeXt will correctly interpret it. For example, | To type the greek character ''α'' you can say <code>$\alpha$</code> which gives <context>$\alpha$</context>. If you have a utf enabled keyboard, you can also type the α directly and ConTeXt will correctly interpret it. For example, | ||
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| − | + | =Subscript and superscript= | |
TeX uses <code>^</code> and <code>_</code> to denote superscipts and subscipts. It is perhaps easiest to explain this by means of some examples. <context>\setuplayout[scale=0.8]$x_{10}^{15}$</context> is written as <code>$x_{10}^{15}$</code> or <code>$x^{15}_{10}$</code>. The order in which <code>_</code> and <code>^</code> are given does not matter. One can also type complicated expressions like <context>\setuplayout[scale=0.8]$a_{b_{c_{d_{e}}}}$</context> as <code>$a_{b_{c_{d_{e}}}}$</code>. | TeX uses <code>^</code> and <code>_</code> to denote superscipts and subscipts. It is perhaps easiest to explain this by means of some examples. <context>\setuplayout[scale=0.8]$x_{10}^{15}$</context> is written as <code>$x_{10}^{15}$</code> or <code>$x^{15}_{10}$</code>. The order in which <code>_</code> and <code>^</code> are given does not matter. One can also type complicated expressions like <context>\setuplayout[scale=0.8]$a_{b_{c_{d_{e}}}}$</context> as <code>$a_{b_{c_{d_{e}}}}$</code>. | ||
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To align superscripts and subscripts one after the other (not above/below each other), add empty braces <code>{}</code> after each of them as <code>$T^a{}_b{}^c{}$</code> to obtain <context>\setuplayout[scale=0.8]$T^a{}_b{}^c{}$</context>. This effectively adds each index as superscript/subscript of the empty braces rather than the main character, thus aligning them separately and avoiding double superscript errors. | To align superscripts and subscripts one after the other (not above/below each other), add empty braces <code>{}</code> after each of them as <code>$T^a{}_b{}^c{}$</code> to obtain <context>\setuplayout[scale=0.8]$T^a{}_b{}^c{}$</context>. This effectively adds each index as superscript/subscript of the empty braces rather than the main character, thus aligning them separately and avoiding double superscript errors. | ||
| − | + | =List of All Math macros= | |
With <code>\usemodule[fnt-25]</code>, {{cmd|showmathfontcharacters}} produces a lengthy annotated catalogue. | With <code>\usemodule[fnt-25]</code>, {{cmd|showmathfontcharacters}} produces a lengthy annotated catalogue. | ||
Revision as of 19:41, 12 May 2024
Contents
Binary Operators Relations
Basic binary symbols can be produced by typing the correspoding keyboard character. These include
+ - = < >
A general expressions can be input in the natural manner. For example $x+y$ gives 
. Notice that TeX took care of the spacing around +. Mathematicians use a lot of symbols that are not avialable on the keyboard. TeX (and ConTeXt) provide macros to input them. For example $x \times y$ gives 
. The following is a parial list of frequently used binary operators and relations.
| Commonly Used Binary Operators | Commonly used relation symbols | Set Relations | |||
|---|---|---|---|---|---|
| \pm | 
|
\leq | 
|
\subset | 
|
| \mp | 
|
\ll | 
|
\subseteq | 
|
| \times | 
|
\geq | 
|
\supset | 
|
| \div | 
|
\gg | 
|
\supseteq | 
|
| \ast | 
|
\equiv | 
|
\cap | 
|
| \star | 
|
\sim | 
|
\cup | 
|
| \bullet | 
|
\simeq | 
|
\in |
|
| \circ | 
|
\approx | 
| ||
| \cdot | 
|
\neq | 
| ||
Integrals and Sums
Greek Letters
To type the greek character α you can say $\alpha$ which gives 
. If you have a utf enabled keyboard, you can also type the α directly and ConTeXt will correctly interpret it. For example,
\enableregime[utf] Here is some Greek math $α^2 + β^2 = γ^2$
Here is a complete list of greek letters
| lowercase greek letters | variation | uppercase greek letters | |||
|---|---|---|---|---|---|
| \alpha |
| ||||
| \beta | 
| ||||
| \gamma | 
|
\Gamma | 
| ||
| \delta | 
|
\Delta | 
| ||
| \epsilon | 
|
\varepsilon | 
| ||
| \zeta | 
| ||||
| \eta | 
| ||||
| \theta | 
|
\vartheta | 
|
\Theta | 
|
| \iota | 
| ||||
| \kappa | 
| ||||
| \lambda | 
|
\Lambda | 
| ||
| \mu | 
| ||||
| \nu | 
| ||||
| \xi | 
|
\Xi | 
| ||
| \omicron | 
| ||||
| \pi | 
|
\varpi | 
|
\Pi | 
|
| \rho | 
|
\varrho | 
| ||
| \sigma | 
|
\varsigma | 
|
\Sigma | 
|
| \tau | 
| ||||
| \upsilon | 
|
\Upsilon | 
| ||
| \phi | 
|
\Phi | 
| ||
| \chi | 
| ||||
| \psi | 
|
\Psi | 
| ||
| \omega | 
|
\Omega | 
| ||
Subscript and superscript
TeX uses ^ and _ to denote superscipts and subscipts. It is perhaps easiest to explain this by means of some examples. 
is written as $x_{10}^{15}$ or $x^{15}_{10}$. The order in which _ and ^ are given does not matter. One can also type complicated expressions like 
as $a_{b_{c_{d_{e}}}}$.
To align superscripts and subscripts one after the other (not above/below each other), add empty braces {} after each of them as $T^a{}_b{}^c{}$ to obtain 
. This effectively adds each index as superscript/subscript of the empty braces rather than the main character, thus aligning them separately and avoiding double superscript errors.
List of All Math macros
With \usemodule[fnt-25], \showmathfontcharacters produces a lengthy annotated catalogue.
Here is the first page:
In ConTeXt MkII, you can see the list of all math macros by \showmathcharacters.
