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* There are two different math modules TeX was designed for ease of typesetting books that contained mathematics. As ConTeXt is built on [http://dante.ctan.org/tex-archive/macros/context/contrib/maths/ CTAN]top of TeX, [[Math with nath|nath]] and [[Math with amsl|amsl]]it inherits all those features.* It is also possible In addition to use most [[LaTeX Math in these, ConTeXt|LaTeX equations in ConTeXt]] with a relatively small set adds lot of supporting definitions.* The "native" ConTeXt way macros to make the typesetting of math is [[MathML]], an application of [[XML]] - rather verbose but mighty.* And there's a [[Math with newmat|new math]] module in the distributionmathematics easier.

ConTeXt supports inline math (mathematical formulas set within ordinary paragraphs as part The basics of the text) and display math (mathematics set on lines by themselves, often with equation numbers). Inline typesetting math is enclosed in "$" signs, while display math ConTeXt is enclosed in a <cmd>startformula</cmd> / <cmd>stopformula</cmd> pairexplained here.

<texcode>Inline === Display math is set as $c^2 mode == a^2 + b^2$, and display math as\placeformula\startformulac^2 = a^2 + b^2.\stopformula</texcode>Type

A more complicated equation:\placeformula\startformula{{\theta_{\text{\CONTEXT}}}^2 \over x+2} = \pmatrix{a_{11}&a_{12}&\ldots&a_{1n}\cr a_{21}&a_{22}&\ldots&a_{2n}\cr \vdots&\vdots&\ddots&\vdots\cr a_{n1}&a_{n2}&\ldots&a_{nn}\cr} \pmatrix{b_1 \cr b_2 \cr \vdots \cr b_n} + \sum_{j=1}^\infty z^j \left( \sum_{\scriptstyle n=1 \atop \scriptstyle n \ne j}^\infty Z_j^n \right)... \stopformula

[http://www.pragma-ade.com/texmath.html Here] you can try it "live" (you must go to [http://www.pragma-ade.com/exalogin login] first). [[MathAlignment]] is covered on a separate page. ==Formula Numbering= Inline math mode === As mentioned above, formulas can be numbered using the <cmd>placeformula</cmd> command. This (and the related <cmd>placesubformula</cmd> command have an optional argument which can be used There are four equivalent commands to produce sub-formula numbering. For exampleget inline math mode:

Examples:$ ... $ % TeX style.\placeformulam{a... } \startformulac^2 = a^2 + b^2math{ ... } \stopformula \placesubformulamathematics{b... }\startformulac^2 = a^2 + b^2\stopformula

<context>Examples:\placeformula{a}\startformulac^2 = a^2 + b^2\stopformula \placesubformula{b}\startformulac^2 = a^2 + b^2= Note to Plain TeX Users ===\stopformula</context> What's going on here ConTeXt is simpler than plain TeX compatible. So, if you have any old document written in plain TeX, it might appear at first glancewill work with ConTeXt. Both <cmd>placeformula</cmd> and <cmd>placesubformula</cmd> produce equation numbers with the optional tag added at the end; the sole difference is that the former increments the equation number first, while the latter This does not (and thus can be used for the second and subsequent formulas mean that use the same formula number but presumably have different tags)you will get pixel by pixel identical output with ConTeXt. This For inline math, everything that you learnt for plain TeX is sufficient also true for cases where the standard ConTeXt equation numbers suffice, and where only one equation number is needed per formula. However, there are many cases where this display math is insufficient, and significantly different. '''Do not use <cmdcode>placeformula$$ .... $$</cmdcode> defines <cmd>formulanumber</cmd> and <cmd>subformulanumber</cmd> commands, which provide hooks ''' to allow the use of write display math formulas in ConTeXt-managed formula numbers with plain TeX equation numbering. These, when used within a formula, simply return since you will not get the formula number in properly formatted form, as can be seen in this simple example with plain TeX's <cmd>eqno</cmd>. Note that correct spacing around the optional tag is inherited from <cmd>placeformula</cmd>formulas.Instead use

More examples:\placeformula{c}\startformula\let\doplaceformulanumber\emptyc^2 = a^2 + b^2 \eqno{\formulanumber}... \stopformula

<context>More examples:\placeformula{c}\startformula\let\doplaceformulanumber\emptyc^2 = a^2 + b^2 \eqno{\formulanumber}\stopformula<See [[Math/context>Display]] for more details on how to use display math in ConTeXt.

In order for this === Note to work properlyAMSTeX/LaTeX Users ===ConTeXt offers almost all the features that are present in AMSTeX and LaTeX. However, we need to turn off ConTeXt's automatic formula number placement; thus the <cmd>let<syntax is different. See this [http://cmd> command to empty <cmd>doplaceformulanumber<dl.contextgarden.net/cmd>, which must be placed <em>after<myway/em> the start of the formulacontext-latex-math. In many practical examples, however, this is not necessary; pdf My Way] for how to 'translate' from amsmath syntax to ConTeXt redefines <cmd>displaylines</cmd> and <cmd>eqalignno</cmd> syntax. [[LaTeX_Math_in_ConTeXt]] gives some brief ideas on how to get the LaTeX syntax to do this automaticallyrun in ConTeXt.

<texcode>=== Math symbols ===* [[Math/basic | How to input math]] (binary relations, greek letters, subscripts and superscripts)Yet more examples:* Accents\placeformula* [[Math/stackers | underbrace]], [[Math/stackers | overbrace]]\startformula* [[Math/fractions | Fractions, Binomials, genfrac, continued fractions.]]\eqalignno{c^2 &= a^2 + b^2 &\formulanumber{a} \cr* Delimiters (big, bigg, left, middle, right)* Integrals and Sums a^2 + b^2 &= c^2 &\subformulanumber{b} \cr* ([[Math/functions|Log like]]) functions d^2 &= e^2 &\formulanumber\cr}* dots\stopformula* [[Multiline_equations#Cases|Cases]], matrices, bordermatrix<* Arrows (see [http:/texcode>/dl.contextgarden.net/myway/matharrows.pdf Math Arrows])* [[Vectors]]* [[Product integral]]

<context>=== Display Math ===* [[Math/Display | Formula, formula number]]Yet more examples* [[Multiline equations]] (see [http:\placeformula\startformula\eqalignno{c^2 &= a^2 + b^2 &\formulanumber{a} \cr a^2 + b^2 &= c^2 &\subformulanumber{b} //dl.contextgarden.net/myway/mathalign.pdf Using \crmathalign and friends]) d^2 &= e^2 &\formulanumber\cr}* Math sub-alignment\stopformula* [[Math spacing]]</context>* Discussion: [[User_talk:Zenlima | summary of formula numbering problems]] (comment: unverified)

<texcode>More examples for left-located equation number:\setupformulas[location=left]\placeformula{d}\startformula\let\doplaceformulanumber\emptyc^2 = a^2 + b^2 \leqno{\formulanumber}\stopformulaand\placeformula\startformula\leqalignno{c^2 &Math Fonts= a^2 + b^2 &\formulanumber{a} \cr a^2 + b^2 &= c^2 &\subformulanumber{b} \cr d^2 &= e^2 &\formulanumber\cr}\stopformula</texcode>

<context>More examples for left-located equation number:\setupformulas''See [[location=leftMath fonts]]\placeformula{d}\startformula\let\doplaceformulanumber\emptyc^2 = a^2 + b^2 \leqno{\formulanumber}\stopformulaand\placeformula\startformula\leqalignno{c^2 &= a^2 + b^2 &\formulanumber{a} \cr a^2 + b^2 &= c^2 &\subformulanumber{b} \cr d^2 &= e^2 &\formulanumber\cr}\stopformula</context>'' for the main article about this subject.

-- 23:46, 15 Aug 2005 (CEST) Prinse Wang ==Number FormattingOther Methods ==* There's a special command, <cmd>digits</cmd>, and a own manual about formatting numbers, see are two different math modules on [http://wwwdante.pragmactan.org/tex-ade.comarchive/macros/context/generalcontrib/magazinesmaths/mag-0003CTAN], [[Math with nath|nath]] and [[Math with amsl|amsl]].pdf Pasting digits togetherAnd there's a [[Math with newmat|new math]]module in the distribution. ==Math * Context now has inbuilt support for [[FontsMultiline equations]]==* It is also possible to use most [[Bold LaTeX Mathin ConTeXt|LaTeX equations in ConTeXt]]with a relatively small set of supporting definitions.* [http://homepage.mac.com/atl/tex/EulerContext.pdf Euler in The "native" ConTeXt (using Euler way of math font)is [[MathML]], an application of [[XML] by Adam Lindsay] - rather verbose but mighty.

* Esp. for physics there’s the [[unitsUnits]] module.

* There's a module for chemical structure formulae: [[Chemistry|PPCHTeX]] (works also with LaTeX). It ==Number Formatting==There's based on a special command, <cmd>digits</cmd>, with its own manual about formatting numbers, see [[MetaPosthttp://www.pragma-ade.com/general/magazines/mag-0003.pdf Pasting digits together]] and  ==Evaluating expressions in ConTeXt==(i.e. ''doing'' math)* See also [[MetaFunExpressions]].