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Revision as of 19:51, 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 | ![]() |
Sums and Integrals
Sums
\setupbodyfont[14pt] \framed[frame=off,align=normal]{% \m{\sum_{k = 0}^{j + n} a_k = e^{a + b - c}} \blank[small] \dm{\sum_{k = 0}^{j + n} a_k = e^{a + b - c}}}
Integrals
\setupbodyfont[14pt] \framed[frame=off,align=normal]{% \m{\int_a^b f(x) \dd x } \blank[small] \dm{\int_a^b f(x) \dd x } \blank[small] \setupmathematics[differentiald=upright] \dm{\int_a^b f(x) \dd x } \blank[small] }
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.