Hjælp:Formatering med opmærkningskoder

Videnskabelige symboler og formler på Wikipedia skrives bedst ved hjælp af opmærkningskoderne <math>...</math> og <chem>...</chem>. I det følgende er den vigtigste syntaks gennemgået.

Som forlæg er brugt https://www.mediawiki.org/wiki/Extension:Math/Help:Formula#Basics.

Se også Wikipedia:Videnskabelig notation for information om korrekt videnskabelig notation og formatering.

Eksempler på elementære udtryk og formler

Wikipedia kode	Resultat
<math>\alpha</math>	$\alpha$
<math>\sqrt{81} = 9</math>	${\sqrt {81}}=9$
<math> f(x) = x^2 + 3\cdot x</math>	$f(x)=x^{2}+3\cdot x$
<math>\sqrt{1-e^2}</math>	${\sqrt {1-e^{2}}}$
<math>\Omega_\text{cirkel} = \frac {2 \cdot \pi }{P}</math>	$\Omega _{\text{cirkel}}={\frac {2\cdot \pi }{P}}$
<math>x_{1,2} = \frac {-b \pm \sqrt{d} }{2 \cdot a}</math>	$x_{1,2}={\frac {-b\pm {\sqrt {d}}}{2\cdot a}}$
<math>\exist \, \alpha \in\mathbb{R} \text{ : } \varphi(x)=\alpha</math>	$\exists \,\alpha \in \mathbb {R} {\text{ : }}\varphi (x)=\alpha$
<math>\int_0^\infty e^{-x^2}\textrm{d}x=\frac{\sqrt{\pi}}{2}</math>	$\int _{0}^{\infty }{\text{e}}^{-x^{2}}{\textrm {d}}x={\frac {\sqrt {\pi }}{2}}$
<math>\alpha</math> = 6<sup>h </sup>12<sup>m </sup>34.5<sup>s</sup> <math>\alpha = 6^\textrm{h} 45^\textrm{ d} 08.917^\textrm{s}</math>	$\alpha$ = 6h 12m 34.5s $\alpha =6^{\textrm {h}}45^{\textrm {d}}08.917^{\textrm {s}}$
<math>\delta</math> = <math>-</math>67° 12′ 34.07″ <math>\delta = -67^\textrm{o} 12' 34.07''</math> <math>\delta = -67</math>° <math>12</math>′ <math>34.07</math>″	$\delta$ = $-$67° 12′ 34.07″ $\delta =-67^{\textrm {o}}12'34.07''$ $\delta =-67$° $12$′ $34.07$″
<chem>H2SO4</chem>	${\ce {H2SO4}}$
<chem>NaCl + AgNO3 -> NaNO3 + AgCl(v)</chem>	${\ce {NaCl + AgNO3 -> NaNO3 + AgCl(v)}}$

Græske bogstaver

Klassiske græske bogstaver

Bogstav	<math>...</math> syntaks	Resultat
Alfa	<math>\alpha </math>, <math>\Alpha </math>	$\alpha$, $\mathrm {A}$
Beta	<math>\beta </math>, <math>\Beta </math>	$\beta$, $\mathrm {B}$
Gamma	<math>\gamma </math>, <math>\Gamma </math>	$\gamma$, $\Gamma$
Delta	<math>\delta </math>, <math>\Delta </math>	$\delta$, $\Delta$
Epsilon	<math>\varepsilon </math>, <math>\Epsilon </math>	$\varepsilon$, $\mathrm {E}$
Zeta	<math>\zeta </math>, <math>\Zeta </math>	$\zeta$, $\mathrm {Z}$
Eta	<math>\eta </math>, <math>\Eta </math>	$\eta$, $\mathrm {H}$
Theta	<math>\theta </math>, <math>\Theta </math>	$\theta$, $\Theta$
Iota	<math>\iota </math>, <math>\Iota </math>	$\iota$, $\mathrm {I}$
Kappa	<math>\kappa </math>, <math>\Kappa </math>	$\kappa$, $\mathrm {K}$
Lambda	<math>\lambda </math>, <math>\Lambda </math>	$\lambda$, $\Lambda$
My	<math>\mu </math>, <math>\Mu </math>	$\mu$, $\mathrm {M}$
Ny	<math>\nu </math>, <math>\Nu </math>	$\nu$, $\mathrm {N}$
Xi	<math>\xi </math>, <math>\Xi </math>	$\xi$, $\Xi$
Omikron	<math>\omicron </math>, <math>\Omicron </math>	$\mathrm {o}$, $\mathrm {O}$
Pi	<math>\pi </math>, <math>\Pi </math>	$\pi$, $\Pi$
Rho	<math>\rho </math>, <math>\Rho </math>	$\rho$, $\mathrm {P}$
Sigma	<math>\sigma </math>, <math>\Sigma </math>	$\sigma$, $\Sigma$
Tau	<math>\tau </math>, <math>\Tau </math>	$\tau$, $\mathrm {T}$
Ypsilon	<math>\upsilon </math>, <math>\Upsilon </math>	$\upsilon$, $\Upsilon$
Phi	<math>\varphi </math>, <math>\Phi </math>	$\varphi$, $\Phi$
Chi	<math>\chi </math>, <math>\Chi </math>	$\chi$, $\mathrm {X}$
Psi	<math>\psi </math>, <math>\Psi </math>	$\psi$, $\Psi$
Omega	<math>\omega </math>, <math>\Omega </math>	$\omega$, $\Omega$

Varianter

Bogstav	<math>...</math> syntaks	Resultat
Epsilon, variant	<math>\epsilon </math>	$\epsilon$
Theta, variant	<math>\vartheta </math>	$\vartheta$
Kappa, variant	<math>\varkappa </math>	$\varkappa$
Pi, variant	<math>\varpi </math>	$\varpi$
Rho, variant	<math>\varrho </math>	$\varrho$
Sigma, variant	<math>\varsigma </math>	$\varsigma$
Phi, variant	<math>\phi </math>	$\phi$

Hebræiske bogstaver

Kun de fire første bruges matematisk

Bogstaver	<math>...</math> syntaks	Resultat
Alef, beth, gimel, daleth	<math>\aleph, \beth, \gimel, \daleth </math>	$\aleph ,\beth ,\gimel ,\daleth$

Skriftsnit

Emne	<math>...</math> syntaks	Resultat
Fed skrift (boldface)	\mathbf {abcxyzABCXYZ123}	$\mathbf {abcxyzABCXYZ123}$
Skråskrift (italics)	\mathit {abcxyzABCXYZ123}	${\mathit {abcxyzABCXYZ123}}$
Dobbeltstreg (blackboard)	\mathbb {abcxyzABCXYZ123}	$\mathbb {abcxyzABCXYZ123}$
Roman	\mathrm {abcxyzABCXYZ123}	$\mathrm {abcxyzABCXYZ123}$
Sans serif	\mathsf {abcxyzABCXYZ123}	${\mathsf {abcxyzABCXYZ123}}$
Kaligrafi	\mathcal {abcxyzABCXYZ123}	${\mathcal {abcxyzABCXYZ123}}$
Fraktur	\mathfrak {abcxyzABCXYZ123}	${\mathfrak {abcxyzABCXYZ123}}$
Formindskede typer	{\scriptstyle\text{abcxyzABCXYZ123}}	${\scriptstyle {\text{abcxyzABCXYZ123}}}$
Blandede skriftsnit Skråskrift Opret skrift Blanding	xyz\ x\ y\ z \text{xyz x y z} \text{Hvis }n\text{ er ulige...}	$xyz\ x\ y\ z$ ${\text{xyz x y z}}$ ${\text{Hvis }}n{\text{ er ulige...}}$
Farvet tekst	{\color{Blue}x^2}+{\color{Orange}2\cdot x}-{\color{LimeGreen}1}	${\color {Blue}x^{2}}+{\color {Orange}2\cdot x}-{\color {LimeGreen}1}$

Foruddefinerede farver

Nedenstående farvenavne er foruddefinerede:

$\color {Blue}{Blue}$	$\color {BlueGreen}{BlueGreen}$	$\color {BlueViolet}{BlueViolet}$	$\color {BrickRed}{BrickRed}$	$\color {Brown}{Brown}$	$\color {BurntOrange}{BurntOrange}$	$\color {CadetBlue}{CadetBlue}$	$\color {CarnationPink}{CarnationPink}$
$\color {DarkOrchid}{DarkOrchid}$	$\color {Emerald}{Emerald}$	$\color {ForestGreen}{ForestGreen}$	$\color {Fuchsia}{Fuchsia}$	$\color {Mahogany}{Mahogany}$	$\color {Maroon}{Maroon}$	$\color {Melon}{Melon}$	$\color {MidnightBlue}{MidnightBlue}$
$\color {Mulberry}{Mulberry}$	$\color {NavyBlue}{NavyBlue}$	$\color {OliveGreen}{OliveGreen}$	$\color {Orange}{Orange}$	$\color {OrangeRed}{OrangeRed}$	$\color {Orchid}{Orchid}$	$\color {Peach}{Peach}$	$\color {Periwinkle}{Periwinkle}$
$\color {PineGreen}{PineGreen}$	$\color {Plum}{Plum}$	$\color {ProcessBlue}{ProcessBlue}$	$\color {Purple}{Purple}$	$\color {RawSienna}{RawSienna}$	$\color {Red}{Red}$	$\color {RedOrange}{RedOrange}$	$\color {RedViolet}{RedViolet}$
$\color {Rhodamine}{Rhodamine}$	$\color {RoyalBlue}{RoyalBlue}$	$\color {RoyalPurple}{RoyalPurple}$	$\color {RubineRed}{RubineRed}$	$\color {Salmon}{Salmon}$	$\color {SeaGreen}{SeaGreen}$	$\color {Sepia}{Sepia}$	$\color {SkyBlue}{SkyBlue}$

Emne	<math>...</math> syntaks	Resultat
Kodeeksempel til brug ved farver i formler	{\color{Green} p}^2 + 2 \cdot {\color{Green} p} \cdot {\color{Red} q} + {\color{Red} q}^2 = ({\color{NavyBlue} p + q})^2	${\color {Green}p}^{2}+2\cdot {\color {Green}p}\cdot {\color {Red}q}+{\color {Red}q}^{2}=({\color {NavyBlue}p+q})^{2}$
Kodeeksempel med brug af selvdefineret farve	\definecolor{orange}{RGB}{255,165,100}\color{orange}\mathrm e^{\mathrm i \cdot \pi}\color{Black} + 1 = 0	$\definecolor {orange}{rgb}{1,0.6470588235294118,0.39215686274509803}\color {orange}\mathrm {e} ^{\mathrm {i} \cdot \pi }\color {Black}+1=0$

Nummerering og bokse

Har en artikel mange ligninger, fx i en udledning, kan den blive uoverskuelig. Ved at nummere ligninger er det nemmere at refere til dem i teksten. Hvis en ligning er central for artiklens emne, kan den fremhæves med en boks.

Wikipedia kode	Resultat
{{NumBlk|:|<math>c^2=a^2+b^2</math>|{{EquationRef|1}}}}	$c^{2}=a^{2}+b^{2}$ (1)
{{Equation box 1 |title= |indent=: |equation=<math>c^2=a^2+b^2</math> |cellpadding = 6 |border = 1 |border colour = black |background colour=white}}	$c^{2}=a^{2}+b^{2}$
{{Equation box 1 |title= |indent=: |equation={{NumBlk|:|<math>c^2=a^2+b^2</math>|{{EquationRef|1}}}} |cellpadding = 6 |border = 1 |border colour = black |background colour=white}}	$c^{2}=a^{2}+b^{2}$ (1)

Matematiske formler

Regneoperationer og formateringstegn

Emne	<math>...</math> syntaks	Resultat
Brøker	\frac {a}{b} \textstyle \frac {a}{b}	${\frac {a}{b}}\textstyle {\frac {a}{b}}$
Regneoperationer Fortegn (U)ligheder	+, -, \cdot, /, \times \pm, \mp =, \neq, \equiv, \not\equiv, \approx, \sim, \propto \ll, \gg, \le, \ge, \leqq, \geqq	$+,-,\cdot ,/,\times$ $\pm ,\mp$ $=,\neq ,\equiv ,\not \equiv ,\approx ,\sim ,\propto$ $\ll ,\gg ,\leq ,\geq ,\leqq ,\geqq$
Rodsymboler	\surd, \sqrt{42}, \sqrt[n]{x}, \sqrt{ \frac {a}{b}}, \sqrt[3]{ \frac {x^3+y^3}{2}}	$\surd ,{\sqrt {42}},{\sqrt[{n}]{x}},{\sqrt {\frac {a}{b}}},{\sqrt[{3}]{\frac {x^{3}+y^{3}}{2}}}$
Modulus aritmetik	s_k \equiv 0 \pmod{m}, a\,\bmod\,b, \mid, \nmid, \gcd(m, n), \operatorname{lcm}(m, n), \operatorname{SFD}(m, n), \operatorname{MFM}(m, n)	$s_{k}\equiv 0{\pmod {m}},a\,{\bmod {\,}}b,\mid ,\nmid ,$ $\gcd(m,n),\operatorname {lcm} (m,n),$ $\operatorname {SFD} (m,n),\operatorname {MFM} (m,n)$
Mellemrum, bredt	a \qquad b \qquad c \qquad d	$a\qquad b\qquad c\qquad d$
Mellemrum, stort	a \quad b \quad c \quad d	$a\quad b\quad c\quad d\quad e$
Mellemrum, øget	a\; b\; c\; d\; e\; f\; g\ \ {}^{238}_{\; 92} \mathrm U	$a\;b\;c\;d\;e\;f\;g\ \ {}_{\;92}^{238}\mathrm {U}$
Mellemrum, standard	a\ b\ c\ d\ e\ f\ g\ \ {}^{238}_{\ 92} \mathrm U	$a\ b\ c\ d\ e\ f\ g\ \ {}_{\ 92}^{238}\mathrm {U}$
Mellemrum, smalt	a\, b\, c\, d\, e\, f\, g\ \ {}^{238}_{\, 92} \mathrm U	$a\,b\,c\,d\,e\,f\,g\ \ {}_{\,92}^{238}\mathrm {U}$
Mellemrum, intet	abc defg	$abcdefg$
Mellemrum, negativt	a\! b\! c\! d\! e\! f\! g\ \ {}^{238}_{\! 92} \mathrm U	$a\!b\!c\!d\!e\!f\!g\ \ {}_{\!92}^{238}\mathrm {U}$

Afgrænsere

Emne	<math>...</math> syntaks	Resultat
Stor parentes	\left ( \frac{1}{2} \right ) \left ( \frac{a}{b} \right )^2	$\left({\frac {1}{2}}\right)\quad \left({\frac {a}{b}}\right)^{2}$
Lille parentes	\left ( \tfrac{1}{2} \right ) \left ( \tfrac{a}{b} \right )^2	$\left({\tfrac {1}{2}}\right)\quad \left({\tfrac {a}{b}}\right)^{2}$
Skarp parentes	\left [ \frac{a}{b} \right ] \left \lbrack \frac{a}{b} \right \rbrack	$\left[{\frac {a}{b}}\right]\quad \left\lbrack {\frac {a}{b}}\right\rbrack$
Tuborg-parentes	\left \{ \frac{a}{b} \right \} \left \lbrace \frac{a}{b} \right \rbrace	$\left\{{\frac {a}{b}}\right\}\quad \left\lbrace {\frac {a}{b}}\right\rbrace$
Vinkel-parentes	\left \langle \frac{a}{b} \right \rangle	$\left\langle {\frac {a}{b}}\right\rangle$
Normtegn	\left | \frac{a}{b} \right | \left \Vert \frac{c}{d} \right \Vert	$\left|{\frac {a}{b}}\right|\quad \left\Vert {\frac {c}{d}}\right\Vert$
Gulv og loft	\left \lfloor \frac{a}{b} \right \rfloor \left \lceil \frac{c}{d} \right \rceil	$\left\lfloor {\frac {a}{b}}\right\rfloor \quad \left\lceil {\frac {c}{d}}\right\rceil$
Skråstreger	\left / \frac{a}{b} \right \backslash	$\left/{\frac {a}{b}}\right\backslash$
Pil op og ned	\left \uparrow \frac{a}{b} \right \downarrow \left \Uparrow \frac{a}{b} \right \Downarrow \left \updownarrow \frac{a}{b} \right \Updownarrow	$\left\uparrow {\frac {a}{b}}\right\downarrow \quad \left\Uparrow {\frac {a}{b}}\right\Downarrow \quad \left\updownarrow {\frac {a}{b}}\right\Updownarrow$
Blanding	\left \langle \psi \right | \quad \left \langle \psi \right | \chi \rangle	$\left\langle \psi \right|\quad \left\langle \psi \right|\chi \rangle$
Udeladelse	\left \{ \frac{A}{B} \right \} \to X \left . \frac{A}{B} \right \} \to X	$\left\{{\frac {A}{B}}\right\}\to X\quad \left.{\frac {A}{B}}\right\}\to X$
Store begrænsere	\big( \Big( \bigg( \Bigg( \dots \Bigg] \bigg] \Big] \big]	${\big (}{\Big (}{\bigg (}{\Bigg (}\dots {\Bigg ]}{\bigg ]}{\Big ]}{\big ]}$
	\big\{ \Big\{ \bigg\{ \Bigg\{ \dots \Bigg\rangle \bigg\rangle \Big\rangle \big\rangle	${\big \{}{\Big \{}{\bigg \{}{\Bigg \{}\dots {\Bigg \rangle }{\bigg \rangle }{\Big \rangle }{\big \rangle }$
	\big| \Big| \bigg| \Bigg| \dots \Bigg\| \bigg\| \Big\| \big\|	${\big |}{\Big |}{\bigg |}{\Bigg |}\dots {\Bigg \|}{\bigg \|}{\Big \|}{\big \|}$
	\big\lfloor \Big\lfloor \bigg\lfloor \Bigg\lfloor \dots \Bigg\rceil \bigg\rceil \Big\rceil \big\rceil	${\big \lfloor }{\Big \lfloor }{\bigg \lfloor }{\Bigg \lfloor }\dots {\Bigg \rceil }{\bigg \rceil }{\Big \rceil }{\big \rceil }$
	\big\uparrow \Big\uparrow \bigg\uparrow \Bigg\uparrow \dots \Bigg\Downarrow \bigg\Downarrow \Big\Downarrow \big\Downarrow	${\big \uparrow }{\Big \uparrow }{\bigg \uparrow }{\Bigg \uparrow }\dots {\Bigg \Downarrow }{\bigg \Downarrow }{\Big \Downarrow }{\big \Downarrow }$
	\big\updownarrow \Big\updownarrow \bigg\updownarrow \Bigg\updownarrow \dots \Bigg\Updownarrow \bigg\Updownarrow \Big\Updownarrow \big\Updownarrow	${\big \updownarrow }{\Big \updownarrow }{\bigg \updownarrow }{\Bigg \updownarrow }\dots {\Bigg \Updownarrow }{\bigg \Updownarrow }{\Big \Updownarrow }{\big \Updownarrow }$
	\big / \Big / \bigg / \Bigg / \dots \Bigg\backslash \bigg\backslash \Big\backslash \big\backslash	${\big /}{\Big /}{\bigg /}{\Bigg /}\dots {\Bigg \backslash }{\bigg \backslash }{\Big \backslash }{\big \backslash }$

Mængder og logik

Emne	<math>...</math> syntaks	Resultat
Talmængder Naturlige tal, hele tal, rationale tal, reelle tal, komplekse tal, kvaternioner	\mathbb{N}, \mathbb{Z}, \mathbb{Z}_+, \mathbb{Z}_-, \mathbb{Q}, \mathbb{Q}_+, \mathbb{Q}_-,\mathbb{R}, \mathbb{R}_+, \mathbb{R}_-, \mathbb{C}, \mathbb{H}	$\mathbb {N} ,\mathbb {Z} ,\mathbb {Z} _{+},\mathbb {Z} _{-},\mathbb {Q} ,\mathbb {Q} _{+},\mathbb {Q} _{-},\mathbb {R} ,\mathbb {R} _{+},\mathbb {R} _{-},\mathbb {C} ,\mathbb {H}$
Mængdesymboler, uendelig	[ ], \{ \}, |, \empty, \varnothing, \in, \not\in, \ni, \not\ni, \infty	$[],\{\},|,\emptyset ,\varnothing ,\in ,\not \in ,\ni ,\not \ni ,\infty$
Kombination af ovenstående	z \in \mathbb{C} \setminus \{ \tfrac{\pi}{2} + p \cdot \pi \, | \, p \in \mathbb{Z} \}	$z\in \mathbb {C} \setminus \{{\tfrac {\pi }{2}}+p\cdot \pi \,|\,p\in \mathbb {Z} \}$
Mængdeoperationer: Fællsesmængde, foreningsmængde, mængdedifferens, produktmængde, komplementærmængde	\cap, \bigcap, \cup, \bigcup, \setminus, \times, \complement	$\cap ,\bigcap ,\cup ,\bigcup ,\setminus ,\times ,\complement$
Inklusionstegn	\subset, \supset, \subseteqq, \nsubseteqq, \supseteqq, \nsupseteqq	$\subset ,\supset ,\subseteqq ,\nsubseteqq ,\supseteqq ,\nsupseteqq$
Logiksymboler	\forall, \exists, \nexists, \or, \and, \neg, \bot, \top	$\forall ,\exists ,\nexists ,\lor ,\land ,\neg ,\bot ,\top$
Implikationer	\Rightarrow, \nRightarrow, \Leftarrow, \nLeftarrow, \Leftrightarrow, \nLeftrightarrow, \Uparrow, \Downarrow, \Updownarrow	$\Rightarrow ,\nRightarrow ,\Leftarrow ,\nLeftarrow ,\Leftrightarrow ,\nLeftrightarrow ,\Uparrow ,\Downarrow ,\Updownarrow$

Funktioner

Emne	<math>...</math> syntaks	Resultat
Trigonometriske funktioner	\sin (x), \cos (x), \tan (x), \cot (x), \sec (x), \csc (x)	$\sin(x),\cos(x),\tan(x),\cot(x),\sec(x),\csc(x)$
Arcusfunktioner	\arcsin (x), \arccos (x), \arctan (x)	$\arcsin(x),\arccos(x),\arctan(x)$
Eksponential- og logaritmefunktioner	\exp (x) = e^x, \exp_a (x) = a^x, 10^x, \ln (x), \log (x), \log_{10} (x)	$\exp(x)=e^{x},\exp _{a}(x)=a^{x},10^{x},\ln(x),\log(x),\log _{10}(x)$
Funktioner som "math" ikke kender	\operatorname{cis}\,(x) \operatorname{ArctanXY}\,(x,y)	$\operatorname {cis} \,(x)$ $\operatorname {ArctanXY} \,(x,y)$
Hyperbolske funktioner	\sinh (x), \cosh (x), \tanh (x), \coth (x)	$\sinh(x),\cosh(x),\tanh(x),\coth(x)$
Areafunktioner	\operatorname{arsinh}\,(x), \operatorname{arcosh}\,(x), \operatorname{artanh}\,(x), \operatorname{arcoth}\,(x)	$\operatorname {arsinh} \,(x),\operatorname {arcosh} \,(x),\operatorname {artanh} \,(x),\operatorname {arcoth} \,(x)$
Minimum, maximum, infimum, supremum	\min M, \max M, \min(x,y), \max(x,y), \inf M, \sup M	$\min M,\max M,\min(x,y),\max(x,y),\inf M,\sup M$
Signum, norm, argument	\sgn (x), \left\vert x \right\vert, \lVert z \rVert, \arg (z)	$\operatorname {sgn}(x),\left\vert x\right\vert ,\lVert z\rVert ,\arg(z)$
Binomialkoefficienter	\binom{n}{k}, \tbinom{n}{k}	${\binom {n}{k}},{\tbinom {n}{k}}$

Geometri og vektorer

Emne	<math>...</math> syntaks	Resultat
Geometriske symboler	\parallel, \nparallel, \perp, \angle, \sphericalangle, \measuredangle, 45^\circ, \Box, \blacksquare, \bigcirc, \triangle, \blacktriangle, \blacktriangledown, \blacktriangleleft, \blacktriangleright	$\parallel ,\nparallel ,\perp ,\angle ,\sphericalangle ,\measuredangle ,45^{\circ },\Box ,\blacksquare ,\bigcirc ,\triangle ,\blacktriangle ,\blacktriangledown ,\blacktriangleleft ,\blacktriangleright$
Vektorer	vec{a}, \hat{a}, \hat{\vec{a}}, \widehat{a}, \bar{a}, \bar{abc}, \overline{a}, \overline{ABC}, \overrightarrow{AB}, \widehat{\overrightarrow{AB}}, \overleftarrow{CD}, \widehat{ABC}, \parallel, \nparallel, \perp	${\vec {a}},{\hat {a}},{\hat {\vec {a}}},{\widehat {a}},{\bar {a}},{\bar {abc}},{\overline {a}},{\overline {ABC}},{\overrightarrow {AB}},{\widehat {\overrightarrow {AB}}},{\overleftarrow {CD}},{\widehat {ABC}},\parallel ,\nparallel ,\perp$

Differential- og integralregning

Emne	<math>...</math> syntaks	Resultat
Differentialer	\text{d}t, \partial t, \nabla\psi	${\text{d}}\ t,\partial t,\nabla \psi$
Differentialkvotienter	\text{d} y/ \text{d} x, {\text{d} y\over\text{d} x}, \textstyle {\text{d} y\over\text{d} x}, {\partial^2\over\partial x_1\partial x_2}y	${\text{d}}y/{\text{d}}x,{{\text{d}}y \over {\text{d}}x},\textstyle {{\text{d}}y \over {\text{d}}x},{\partial ^{2} \over \partial x_{1}\partial x_{2}}y$
Afledede	\prime, \backprime, f^\prime, f', f'', f^{(3)}, \dot y, \ddot y	$\prime ,\backprime ,f^{\prime },f',f'',f^{(3)},{\dot {y}},{\ddot {y}}$
Ubestemte integraler	\int \cos(x) \, \text{d}x = \sin(x) + K, \iint\limits_D \, \text{d}x\,\text{d}y, \iiint\limits_E \, \text{d}x\,\text{d}y \,\text{d}z	$\int \cos(x)\,{\text{d}}x=\sin(x)+K,$ $\iint \limits _{D}\,{\text{d}}x\,{\text{d}}y,\iiint \limits _{E}\,{\text{d}}x\,{\text{d}}y\,{\text{d}}z$
Bestemte integraler Sidestil	\int\limits_{1}^{3}\frac{\text{e}^3}{x^2}\, \text{d}x, \int_{1}^{3}\frac{\text{e}^3}{x^2}\, \text{d}x	$\int \limits _{1}^{3}{\frac {{\text{e}}^{3}}{x^{2}}}\,{\text{d}}x,\int _{1}^{3}{\frac {{\text{e}}^{3}}{x^{2}}}\,{\text{d}}x$
Bestemte integraler Linjestil	\textstyle \int\limits_{-N}^{N} \text{e}^x\, \text{d}x, \textstyle \int_{-N}^{N} \text{e}^x\, \text{d}x	$\textstyle \int \limits _{-N}^{N}{\text{e}}^{x}\,{\text{d}}x,\textstyle \int _{-N}^{N}{\text{e}}^{x}\,{\text{d}}x$

Formatering af ligninger

Emne	<math>...</math> syntaks	Resultat
Tuborg-funktion (3)	f(x) = \begin{cases} 1 & -1 \le x < 0 \\ \frac{1}{2} & x = 0 \\ 1 - x^2 & \text{ellers} \end{cases}	$f(x)={\begin{cases}1&-1\leq x<0\\{\frac {1}{2}}&x=0\\1-x^{2}&{\text{ellers}}\end{cases}}$
Tuborg-funktion (2)	f(n) = \begin{cases} \frac{n}{2}, & \text{hvis }n\text{ er lige} \\ 3n+1 & \text{hvis }n\text{ er ulige} \end{cases}	$f(n)={\begin{cases}{\frac {n}{2}},&{\text{hvis }}n{\text{ er lige}}\\3n+1&{\text{hvis }}n{\text{ er ulige}}\end{cases}}$
Tuborg-funktion (vandret)	f(n) =\underbrace{\tfrac{n}{2}}_{\text{A}}+\underbrace{3n}_{\text{B}}	$f(n)=\underbrace {\tfrac {n}{2}} _{\text{A}}+\underbrace {3n} _{\text{B}}$
Opstilling	\begin{align} u & = \tfrac{1}{\sqrt{2}}(x+y) \qquad & x &= \tfrac{1}{\sqrt{2}}(u+v) \\ v & = \tfrac{1}{\sqrt{2}}(x-y) \qquad & y &= \tfrac{1}{\sqrt{2}}(u-v) \end{align}	${\begin{aligned}u&={\tfrac {1}{\sqrt {2}}}(x+y)\qquad &x&={\tfrac {1}{\sqrt {2}}}(u+v)\\v&={\tfrac {1}{\sqrt {2}}}(x-y)\qquad &y&={\tfrac {1}{\sqrt {2}}}(u-v)\end{aligned}}$
Opstilling	\begin{align} f(x) & = (a + b)^2 \\ & = a^2 + 2 \cdot a \cdot b + b^2 \\ \end{align}	${\begin{aligned}f(x)&=(a+b)^{2}\\&=a^{2}+2\cdot a\cdot b+b^{2}\\\end{aligned}}$
Opstilling	\begin{alignat}{2} f(x) & = (a - b)^2 \\ & = a^2 - 2 \cdot a \cdot b + b^2 \\ \end{alignat}	${\begin{alignedat}{2}f(x)&=(a-b)^{2}\\&=a^{2}-2\cdot a\cdot b+b^{2}\\\end{alignedat}}$
Højrejusteret opstilling	\begin{array}{lcl} f(x) & = & exprA & = & longexprB & = & exprC\\ & = & exD & = & exprE & = & exprF \\ & = & expressionG & = & exprH \end{array}	${\begin{array}{lcl}f(x)&=&exprA&=&longexprB&=&exprC\\&=&exD&=&exprE&=&exprF\\&=&expressionG&=&exprH\end{array}}$
Venstrejusteret opstilling	\begin{array}{lcr} f(x) & = & exprA & = & longexprB & = & exprC\\ & = & exD & = & exprE & = & exprF \\ & = & expressionG & = & exprH \end{array}	${\begin{array}{lcr}f(x)&=&exprA&=&longexprB&=&exprC\\&=&exD&=&exprE&=&exprF\\&=&expressionG&=&exprH\end{array}}$
Definitioner justeret med "="	\begin{align} \frac{\text {d}}{\text {d} x}\sinh x &= \cosh x \\ \frac{\text {d}}{\text {d} x}\cosh x &= \sinh x \\ \frac{\text {d}}{\text {d} x}\tanh x &= 1 - \tanh^2 x = \operatorname{sech}^2 x = \frac{1}{\cosh^2 x} \\ \frac{\text {d}}{\text {d} x}\operatorname{arsinh} x &= \frac{1}{\sqrt{x^2+1}} \\ \frac{\text {d}}{\text {d} x}\operatorname{arcosh} x &= \frac{1}{\sqrt{x^2 - 1}} && x > 1 \\ \frac{\text {d}}{\text {d} x}\operatorname{artanh} x &= \frac{1}{1-x^2} && |x| < 1 \\ \end{align}	${\begin{aligned}{\frac {\text{d}}{{\text{d}}x}}\sinh x&=\cosh x\\{\frac {\text{d}}{{\text{d}}x}}\cosh x&=\sinh x\\{\frac {\text{d}}{{\text{d}}x}}\tanh x&=1-\tanh ^{2}x=\operatorname {sech} ^{2}x={\frac {1}{\cosh ^{2}x}}\\{\frac {\text{d}}{{\text{d}}x}}\operatorname {arsinh} x&={\frac {1}{\sqrt {x^{2}+1}}}\\{\frac {\text{d}}{{\text{d}}x}}\operatorname {arcosh} x&={\frac {1}{\sqrt {x^{2}-1}}}&&x>1\\{\frac {\text{d}}{{\text{d}}x}}\operatorname {artanh} x&={\frac {1}{1-x^{2}}}&&|x|<1\\\end{aligned}}$
Definitioner justeret med array	\begin{array}{lcl} \frac{\text {d}}{\text {d} x}\sinh x & = & \cosh x \\ \frac{\text {d}}{\text {d} x}\cosh x & = & \sinh x \\ \frac{\text {d}}{\text {d} x}\tanh x & = & 1 - \tanh^2 x = \operatorname{sech}^2 x = \frac{1}{\cosh^2 x} \\ \frac{\text {d}}{\text {d} x}\operatorname{arsinh} x & = & \frac{1}{\sqrt{x^2+1}} \\ \frac{\text {d}}{\text {d} x}\operatorname{arcosh} x & = & \frac{1}{\sqrt{x^2 - 1}} & & x > 1 \\ \frac{\text {d}}{\text {d} x}\operatorname{artanh} x & = & \frac{1}{1-x^2} & & |x| < 1 \\ \end{array}	${\begin{array}{lcl}{\frac {\text{d}}{{\text{d}}x}}\sinh x&=&\cosh x\\{\frac {\text{d}}{{\text{d}}x}}\cosh x&=&\sinh x\\{\frac {\text{d}}{{\text{d}}x}}\tanh x&=&1-\tanh ^{2}x=\operatorname {sech} ^{2}x={\frac {1}{\cosh ^{2}x}}\\{\frac {\text{d}}{{\text{d}}x}}\operatorname {arsinh} x&=&{\frac {1}{\sqrt {x^{2}+1}}}\\{\frac {\text{d}}{{\text{d}}x}}\operatorname {arcosh} x&=&{\frac {1}{\sqrt {x^{2}-1}}}&&x>1\\{\frac {\text{d}}{{\text{d}}x}}\operatorname {artanh} x&=&{\frac {1}{1-x^{2}}}&&|x|<1\\\end{array}}$
Tekst	Kode	$Kode$

Matricer

Emne	<math>...</math> syntaks	Resultat
Matrix-opstilling	\begin{matrix} x & y \\ z & u \end{matrix} , \begin{matrix} a & b & c\\ d & e & f \end{matrix}	${\begin{matrix}x&y\\z&u\end{matrix}}$, ${\begin{matrix}a&b&c\\d&e&f\end{matrix}}$
Matricer og determinanter	\begin{Bmatrix} x & y \\ z & u \end{Bmatrix}, \begin{pmatrix} x & y \\ z & u \end{pmatrix}, \begin{vmatrix} x & y \\ z & u \end{vmatrix}, \begin{Vmatrix} x & y \\ z & u \end{Vmatrix}	${\begin{Bmatrix}x&y\\z&u\end{Bmatrix}},{\begin{pmatrix}x&y\\z&u\end{pmatrix}},{\begin{vmatrix}x&y\\z&u\end{vmatrix}},{\begin{Vmatrix}x&y\\z&u\end{Vmatrix}}$
Små matricer, matricer af dimension 2 og 3	\bigl( \begin{smallmatrix} a&b\\ c&d \end{smallmatrix} \bigr), \begin{Bmatrix} a_{11} & a_{12} \\ a_{21} & a_{22} \end{Bmatrix}, \begin{Bmatrix} a_{11} & a_{12} & a_{13} \\ a_{21} & a_{22} & a_{23} \\ a_{31} & a_{32} & a_{33} \end{Bmatrix}	${\bigl (}{\begin{smallmatrix}a&b\\c&d\end{smallmatrix}}{\bigr )},{\begin{Bmatrix}a_{11}&a_{12}\\a_{21}&a_{22}\end{Bmatrix}},{\begin{Bmatrix}a_{11}&a_{12}&a_{13}\\a_{21}&a_{22}&a_{23}\\a_{31}&a_{32}&a_{33}\end{Bmatrix}}$
Stor matrix	\begin{Bmatrix} 1 & \cdots & 0 \\ \vdots & \ddots & \vdots \\ 0 & \cdots & 1 \end{Bmatrix}, \begin{Bmatrix} a_{11} & a_{12} & \cdots & a_{1n} \\ a_{21} & a_{22} & \cdots & a_{2n} \\ \vdots & \vdots & \ddots & \vdots \\ a_{n1} & a_{n2} & \cdots & a_{nn} \end{Bmatrix}	${\begin{Bmatrix}1&\cdots &0\\\vdots &\ddots &\vdots \\0&\cdots &1\end{Bmatrix}},{\begin{Bmatrix}a_{11}&a_{12}&\cdots &a_{1n}\\a_{21}&a_{22}&\cdots &a_{2n}\\\vdots &\vdots &\ddots &\vdots \\a_{n1}&a_{n2}&\cdots &a_{nn}\end{Bmatrix}}$
Stor matrix	A = \begin{pmatrix} a_{11} & a_{12} & \ldots & a_{1n} \\ a_{21} & a_{22} & \ldots & a_{2n} \\ \vdots & \vdots & \ddots & \vdots \\ a_{m1} & a_{m2} & \ldots & a_{mn} \end{pmatrix}.	$A={\begin{pmatrix}a_{11}&a_{12}&\ldots &a_{1n}\\a_{21}&a_{22}&\ldots &a_{2n}\\\vdots &\vdots &\ddots &\vdots \\a_{m1}&a_{m2}&\ldots &a_{mn}\end{pmatrix}}.$
Invers Hilbert-matrix	H_4^{-1}\ =\ \begin{pmatrix} 16 & -120 & 240 & -140 \\ -120 & 1200 & -2700 & 1680 \\ 240 & -2700 & 6480 & -4200 \\ -140 & 1680 & -4200 & 2800 \end{pmatrix}	$H_{4}^{-1}\ =\ {\begin{pmatrix}16&-120&240&-140\\-120&1200&-2700&1680\\240&-2700&6480&-4200\\-140&1680&-4200&2800\end{pmatrix}}$
Tabel	\begin{array}{|c|c||c|} a & b & S \\ \hline 0&0&1\\ 0&1&1\\ 1&0&1\\ 1&1&0\\ \end{array}	${\begin{array}{|c|c||c|}a&b&S\\\hline 0&0&1\\0&1&1\\1&0&1\\1&1&0\\\end{array}}$

Eksempler på matematiske formler

${\Bigg \{}{\begin{matrix}{a_{1}\cdot x_{1}+b_{1}\cdot y_{1}=c_{1}}\\{a_{2}\cdot x_{2}+b_{2}\cdot y_{2}=c_{2}}\end{matrix}}$

$\Updownarrow$

$(x_{1},x_{2})={\Bigg (}{\frac {\begin{vmatrix}c_{1}&b_{1}\\c_{2}&b_{2}\end{vmatrix}}{\begin{vmatrix}a_{1}&b_{1}\\a_{2}&b_{2}\end{vmatrix}}},{\frac {\begin{vmatrix}a_{1}&c_{1}\\a_{2}&c_{2}\end{vmatrix}}{\begin{vmatrix}a_{1}&b_{1}\\a_{2}&b_{2}\end{vmatrix}}}{\Bigg )}={\bigg (}{\frac {c_{1}\cdot b_{2}-c_{2}\cdot b_{1}}{a_{1}\cdot b_{2}-a_{2}\cdot b_{1}}},{\frac {a_{1}\cdot c_{2}-a_{2}\cdot c_{1}}{a_{1}\cdot b_{2}-a_{2}\cdot b_{1}}}{\bigg )}$

Fysiske symboler

Emne	<math>...</math> syntaks	Resultat
Reduceret Planck-konstant, liter-symbol, reciprok ohm	\hbar • \ell • \mho	$\hbar ,\ell ,\mho$
Nuklider og ioner	{}_1^1\hbox{H} • {}_1^2\hbox{D} • {}_1^3\hbox{T} • {}_{\,\,92}^{235}\hbox{U}	${}_{1}^{1}{\hbox{H}},{}_{1}^{2}{\hbox{D}},{}_{1}^{3}{\hbox{T}},{}_{\,\,92}^{235}{\hbox{U}}$

Eksempler på fysiske formler

Formatering af fysiske reaktionsligninger sker i simple tilfælde lettest med formateringskoden <chem>...</chem> evt. i kombination med <math>...</math>.

Emne	<math>...</math> og/eller <chem>...</chem> syntaks	Resultat
Radioaktivitet	<chem>^{227}_{90}Th+</chem>	${\ce {^{227}_{90}Th+}}$
	<chem>^{238}_{92}U -> ^{234}_{90}Th + ^{4}_{2}He</chem>	${\ce {^{238}_{92}U -> ^{234}_{90}Th + ^{4}_{2}He}}$
	<math>{}^{238}_{\ 92} \mathrm U \to {}^{234}_{\ 90} \mathrm{Th} + \;{}^4_2\mathrm{He} </math>	${}_{\ 92}^{238}\mathrm {U} \to {}_{\ 90}^{234}\mathrm {Th} +\;{}_{2}^{4}\mathrm {He}$
	<chem>^{146}_{62}Sm -> ^{142}_{60}Nd + ^{4}_{2}He + 2{,}529 MeV</chem>	${\ce {^{146}_{62}Sm -> ^{142}_{60}Nd + ^{4}_{2}He + 2{,}529 MeV}}$
	<chem>^{198}_{79}Au -> ^{198}_{80}Hg</chem><math>\, + \mathrm{e}^{-}+ \overline{\nu}_e </math>	${\ce {^{198}_{79}Au -> ^{198}_{80}Hg}}$$\,+\mathrm {e} ^{-}+{\overline {\nu }}_{e}$
	<math>{}^{198}_{\ 79} \mathrm {Au} \to {}^{198}_{\ 80} \mathrm {Hg} + \mathrm{e}^{-}+ \overline{\nu}_e </math>	${}_{\ 79}^{198}\mathrm {Au} \to {}_{\ 80}^{198}\mathrm {Hg} +\mathrm {e} ^{-}+{\overline {\nu }}_{e}$
	<math>{}^{40}_{19} \mathrm {K} \to {}^{40}_{18} \mathrm {Ar} + \mathrm{e}^{+} + \nu_e </math>	${}_{19}^{40}\mathrm {K} \to {}_{18}^{40}\mathrm {Ar} +\mathrm {e} ^{+}+\nu _{e}$
	<math>{}^{A}_{Z} \mathrm {X} \to {}^{A-4}_{Z-2} \mathrm {Y} + {}^{4}_{2} \mathrm {He} + \Delta E </math>	${}_{Z}^{A}\mathrm {X} \to {}_{Z-2}^{A-4}\mathrm {Y} +{}_{2}^{4}\mathrm {He} +\Delta E$
	<math>{}^{A}_{Z} \mathrm {X} \to {}^{A}_{Z+1} \mathrm {Y} + \mathrm{e}^{-} \mathrm + \overline{\nu}_e</math>	${}_{Z}^{A}\mathrm {X} \to {}_{Z+1}^{A}\mathrm {Y} +\mathrm {e} ^{-}\mathrm {+} {\overline {\nu }}_{e}$
	<math>\hbox{n}\to\hbox{p}+\hbox{e}^-+\overline{\nu}_{\mathrm{e}}</math>	${\hbox{n}}\to {\hbox{p}}+{\hbox{e}}^{-}+{\overline {\nu }}_{\mathrm {e} }$
	<math>{}^1_0\hbox{n}\;\to\;{}^1_1\hbox{p}\;+\;_{-}{}^0_{1}\hbox{e}\;+\;\bar{\nu}_e </math><nowiki>	${}_{0}^{1}{\hbox{n}}\;\to \;{}_{1}^{1}{\hbox{p}}\;+\;_{-}{}_{1}^{0}{\hbox{e}}\;+\;{\bar {\nu }}_{e}$
	<math>{}^{137}\mathrm{Ba}^{*} \rightarrow {}^{137}\mathrm{Ba} + \gamma</math>	${}^{137}\mathrm {Ba} ^{*}\rightarrow {}^{137}\mathrm {Ba} +\gamma$
	<math>{}^{14}_{\ 6}\mathrm{C} \rightarrow {}^{14}_{\ 7}\mathrm{N} + {}^{\ 0}_{-1}\mathrm{e} + \bar{\nu}_\mathrm{e} </math>	${}_{\ 6}^{14}\mathrm {C} \rightarrow {}_{\ 7}^{14}\mathrm {N} +{}_{-1}^{\ 0}\mathrm {e} +{\bar {\nu }}_{\mathrm {e} }$
	<math>{}^1_1\hbox{p}\;\to\;{}^1_0\hbox{n}\;+\;_{+}{}^0_{1}\hbox{e}\;+\;\nu_e </math>	${}_{1}^{1}{\hbox{p}}\;\to \;{}_{0}^{1}{\hbox{n}}\;+\;_{+}{}_{1}^{0}{\hbox{e}}\;+\;\nu _{e}$
	<math>{}^{22}_{11}\mathrm{Na} \rightarrow {}^{22}_{10}\mathrm{Ne} + {}^{\ 0}_{+1}\mathrm{e} + \nu_\mathrm{e}</math>	${}_{11}^{22}\mathrm {Na} \rightarrow {}_{10}^{22}\mathrm {Ne} +{}_{+1}^{\ 0}\mathrm {e} +\nu _{\mathrm {e} }$
Kernereaktioner	<math>{}^1_0\hbox{n}\;\to\;{}^1_1\hbox{p}\;+\;_{-}{}^0_{1}\hbox{e}\;+\;\bar{\nu}_e </math>	${}_{0}^{1}{\hbox{n}}\;\to \;{}_{1}^{1}{\hbox{p}}\;+\;_{-}{}_{1}^{0}{\hbox{e}}\;+\;{\bar {\nu }}_{e}$
	<math>{}^{14}_{\ 6}\mathrm{C} \rightarrow {}^{14}_{\ 7}\mathrm{N} + {}^{\ 0}_{-1}\mathrm{e} + \bar{\nu}_\mathrm{e} </math>	${}_{\ 6}^{14}\mathrm {C} \rightarrow {}_{\ 7}^{14}\mathrm {N} +{}_{-1}^{\ 0}\mathrm {e} +{\bar {\nu }}_{\mathrm {e} }$
	<math>{}^1_1\hbox{p}\;\to\;{}^1_0\hbox{n}\;+\;_{+}{}^0_{1}\hbox{e}\;+\;\nu_e </math>	${}_{1}^{1}{\hbox{p}}\;\to \;{}_{0}^{1}{\hbox{n}}\;+\;_{+}{}_{1}^{0}{\hbox{e}}\;+\;\nu _{e}$
	<math>{}^{22}_{11}\mathrm{Na} \rightarrow {}^{22}_{10}\mathrm{Ne} + {}^{\ 0}_{+1}\mathrm{e} + \nu_\mathrm{e} </math>	${}_{11}^{22}\mathrm {Na} \rightarrow {}_{10}^{22}\mathrm {Ne} +{}_{+1}^{\ 0}\mathrm {e} +\nu _{\mathrm {e} }$
	<math>{}^{238}_{\ 92} \mathrm U \to {}^{234}_{\ 90} \mathrm{Th} + \;{}^4_2\mathrm{He}</math>	${}_{\ 92}^{238}\mathrm {U} \to {}_{\ 90}^{234}\mathrm {Th} +\;{}_{2}^{4}\mathrm {He}$

Kemiske formler

Emne	<chem>...</chem> syntaks	Resultat
Tekst med formler	Hvis <chem>H3O+</chem> aftager, så må <chem>CH3CO2H</chem> vokse og <chem>CH3CO2-</chem> må aftage. Bemærk, at et minustegn i koden skal skrives som en bindestreg (der er let tilgængelig på tastaturet)...	Hvis ${\ce {H3O+}}$ aftager, så må ${\ce {CH3CO2H}}$ vokse og ${\ce {CH3CO2-}}$ må aftage. ... men vises som et minustegn (hvilket er korrekt).
Formler og reaktioner	<chem>(NH4)2S</chem> <chem>CO3^{2-}(aq)</chem> <chem>KCr(SO4)2*12H2O</chem> <chem>C6H5-CHO</chem> <chem>A-B=C#D</chem> <chem>Fe^{II}Fe^{III}2O4</chem> <chem>[Fe(\eta^5-C5H5)2]</chem> <chem>HA + B -> A + HB</chem> <chem>NaCl + AgNO3 -> NaNO3 + AgCl(v)</chem> <chem>Mg + 2H2O -> Mg(OH)2 + H2 (^)</chem> <chem>Pb(NO3)2 + 2KI -> PbI2(v) + 2KNO3</chem> <chem>\underset{syre}{HA} + \underset{base}{B} <=> \underset{korresponderende\ base}{A^-} + \underset{korresponderende\ syre}{HB+}</chem> <chem>CaSO4.1/2H2O + 1\!1/2 H2O -> CaSO4.2H2O</chem> <chem>{C_\mathit{x} \, H_\mathit{y}} + \mathit{z} \, O2 -> {\mathit{x}CO2} + \frac{\mathit{y}}{2}H2O</chem> <chem>^{227}_{90}Th+</chem> <chem>^{238}_{92}U -> ^{234}_{90}Th + ^{4}_{2}He</chem>	${\ce {(NH4)2S}}$ ${\ce {CO3^{2-}(aq)}}$ ${\ce {KCr(SO4)2*12H2O}}$ ${\ce {C6H5-CHO}}$ ${\ce {A-B=C#D}}$ ${\ce {Fe^{II}Fe^{III}2O4}}$ ${\ce {[Fe(\eta^5-C5H5)2]}}$ ${\ce {HA + B -> A + HB}}$ ${\ce {NaCl + AgNO3 -> NaNO3 + AgCl(v)}}$ ${\ce {Mg + 2H2O -> Mg(OH)2 + H2 (^)}}$ ${\ce {Pb(NO3)2 + 2KI -> PbI2(v) + 2KNO3}}$ ${\ce {{\underset {syre}{HA}}+{\underset {base}{B}}<=>{\underset {korresponderende\ base}{A^{-}}}+{\underset {korresponderende\ syre}{HB+}}}}$ ${\ce {CaSO4.1/2H2O + 1\!1/2 H2O -> CaSO4.2H2O}}$ ${\ce {{C_{\mathit {x}}\,H_{\mathit {y}}}+{\mathit {z}}\,O2->{{\mathit {x}}CO2}+{\frac {\mathit {y}}{2}}H2O}}$ ${\ce {^{227}_{90}Th+}}$ ${\ce {^{238}_{92}U -> ^{234}_{90}Th + ^{4}_{2}He}}$
Ligninger med kemiske formler	<math chem>K=\frac {\{\ce{CH3CO2-}\}\{\ce{H3O+}\}} \ce{\{CH3CO2H\}}</math> <math> \Delta_\mathrm{r}G_{T,p}=\sum_{i=1}^k \mu_i^\ominus \cdot \nu_i + R \cdot T \cdot \ln \frac{\{\mathrm{S}\}^\sigma \cdot \{\mathrm{T}\}^\tau} {\{\mathrm{A}\}^\alpha \cdot \{\mathrm{B}\}^\beta} </math>	$K={\frac {\{{\ce {CH3CO2-}}\}\{{\ce {H3O+}}\}}{{\ce {\{CH3CO2H\}}}}}$ $\Delta _{\mathrm {r} }G_{T,p}=\sum _{i=1}^{k}\mu _{i}^{\ominus }\cdot \nu _{i}+R\cdot T\cdot \ln {\frac {\{\mathrm {S} \}^{\sigma }\cdot \{\mathrm {T} \}^{\tau }}{\{\mathrm {A} \}^{\alpha }\cdot \{\mathrm {B} \}^{\beta }}}$
Generel reaktionsligning	<chem> \alpha_1 R1{} +\alpha_2 R2{} +...+\alpha_{\mathit i} R_{\mathit i}{} +...\rightarrow \nu_1 P1{} + \nu_2 P2{} +...+\nu_{\mathit j} P_{\mathit j}{} +...</chem>	${\ce {\alpha _{1}R1{}+\alpha _{2}R2{}+...+\alpha _{\mathit {i}}R_{\mathit {i}}{}+...\rightarrow \nu _{1}P1{}+\nu _{2}P2{}+...+\nu _{\mathit {j}}P_{\mathit {j}}{}+...}}$
	<math>\alpha_1 \rm{R}_1 +\alpha_2 \rm{R}_2 +...+\alpha_i \rm{R}_i +...\rightarrow \nu_1 \rm{P}_1 + \nu_2 \rm{P}_2 +...+\nu_j \rm{P}_j +...</math>	$\alpha _{1}{\rm {{R}_{1}+\alpha _{2}{\rm {{R}_{2}+...+\alpha _{i}{\rm {{R}_{i}+...\rightarrow \nu _{1}{\rm {{P}_{1}+\nu _{2}{\rm {{P}_{2}+...+\nu _{j}{\rm {{P}_{j}+...}}}}}}}}}}}}$

Eksempler på kemiske formler

$\alpha \cdot \mu _{\mathrm {A} }+\beta \cdot \mu _{\mathrm {B} }=\sigma \cdot \mu _{\mathrm {S} }+\tau \cdot \mu _{\mathrm {T} }\,$

${\text{d}}G=V\cdot {\text{d}}p-S\cdot {\text{d}}T+\sum _{i=1}^{k}\mu _{i}\cdot {\text{d}}N_{i}$.

$\Delta _{\mathrm {r} }G_{T,p}=\sigma \cdot \mu _{\mathrm {S} }+\tau \cdot \mu _{\mathrm {T} }-\alpha \cdot \mu _{\mathrm {A} }-\beta \cdot \mu _{\mathrm {B} }\,$.

${\begin{alignedat}{2}\Delta _{\mathrm {r} }G_{T,p}&=((\sigma \cdot \mu _{\mathrm {S} }^{\ominus }+\tau \cdot \mu _{\mathrm {T} }^{\ominus })-(\alpha \cdot \mu _{\mathrm {A} }^{\ominus }+\beta \cdot \mu _{\mathrm {B} }^{\ominus })\\&+(\sigma \cdot R\cdot T\cdot \ln\{\mathrm {S} \}+\tau \cdot R\cdot T\cdot \ln\{\mathrm {T} \})\\&-(\alpha \cdot R\cdot T\cdot \ln\{\mathrm {A} \}+\beta \cdot R\cdot T\cdot \ln\{\mathrm {B} \})\\\end{alignedat}}$

$\sum _{i=1}^{k}\mu _{i}^{\ominus }\cdot \nu _{i}=\Delta _{\mathrm {r} }G^{\ominus }$