itex

itex is very close to LaTeX but with a few minor differences, namely:

< and > don’t work. Use \lt and \gt instead.
The gather environment is called gathered.
The align environment is called aligned.
There is no multline environment.
Arrays

Below is a list of itex commands and corresponding rendered results, grouped by category.

greek letters
log-like symbols
operators
arrows
delimiters
large operators
punctuation
symbols
fractions, superscripts, subscripts, and roots
sizes and styles
matrices
alignment
colors

Greek Letters

Command	Result	Command	Result	Command	Result
`\alpha`	$α$			`\Alpha`	$Α$
`\beta`	$β$			`\Beta`	$Β$
`\gamma`	$γ$			`\Gamma`	$Γ$
`\delta`	$δ$			`\Delta`	$Δ$
`\epsilon`	$ϵ$	`\varepsilon`	$ε$	`E`	$E$
`\zeta`	$ζ$			`\Zeta`	$Ζ$
`\eta`	$η$			`\Eta`	$Η$
`\theta`	$θ$	`\vartheta`	$ϑ$	`\Theta`	$Θ$
`\iota`	$ι$			`\Iota`	$Ι$
`\kappa`	$κ$	`\varkappa`	$ϰ$	`\Kappa`	$Κ$
`\lambda`	$λ$			`\Lambda`	$Λ$
`\mu`	$μ$			`\Mu`	$Μ$
`\nu`	$ν$			`\Nu`	$Ν$
`\xi`	$ξ$			`\Xi`	$Ξ$
`\omicron`	$ℴ$			`O`	$O$
`\pi`	$π$	`\varpi`	$ϖ$	`\Pi`	$Π$
`\rho`	$ρ$	`\varrho`	$ϱ$	`\Rho`	$Ρ$
`\sigma`	$σ$	`\varsigma`	$ς$	`\Sigma`	$Σ$
`\tau`	$τ$			`\Tau`	$Τ$
`\upsilon`	$υ$			`\Upsilon`	$ϒ$
`\phi`	$ϕ$	`\varphi`	$φ$	`\Phi`	$Φ$
`\chi`	$χ$			`X`	$X$
`\psi`	$ψ$			`\Psi`	$Ψ$
`\omega`	$ω$			`\Omega`	$Ω$

Archaic Letters and Other Symbols

Command	Result
`\backepsilon`	$϶$
`\digamma`	$ϝ$
`\mho`	$℧$

Log-like Symbols

Command	Result	Command	Result	Command	Result
`\arccos{x}`	$\arccos x$	`\exp{x}`	$\exp x$	`\max{x}`	$\max x$
`\arcsin{x}`	$\arcsin x$	`\gcd{x}`	$\gcd x$	`\min{x}`	$\min x$
`\arctan{x}`	$\arctan x$	`\inf{x}`	$\inf x$	`x \mod{m}`	$x mod m$
`\arg{x}`	$\arg x$	`\hom{x}`	$hom x$	`x \pmod{m}`	$x (mod m)$
`\cos{x}`	$\cos x$	`\ker{x}`	$\ker x$	`\Pr{x}`	$\Pr x$
`\cosh{x}`	$\cosh x$	`\lg{x}`	$\lg x$	`\sec{x}`	$\sec x$
`\cot{x}`	$\cot x$	`\lim{x}`	$\lim x$	`\sin{x}`	$\sin x$
`\coth{x}`	$\coth x$	`\liminf{x}`	$liminf x$	`\sinh{x}`	$\sinh x$
`\csc{x}`	$\csc x$	`\limsup{x}`	$limsup x$	`\sup{x}`	$\sup x$
`\deg{x}`	$\deg x$	`\ln{x}`	$\ln x$	`\tan{x}`	$\tan x$
`\det{x}`	$\det x$	`\log{x}`	$\log x$	`\tanh{x}`	$\tanh x$
`\dim{x}`	$\dim x$

Operators

Command	Result	Command	Result
`\amalg`	$⨿$	`\clubsuit`	$♣$
`\angle`	$∠$	`\diamondsuit`	$♢$
`\measuredangle`	$∡$	`\heartsuit`	$♡$
`\sphericalangle`	$∢$	`\spadesuit`	$♠$
`\approx`	$\approx$	`\circ`	$\circ$
`\approxeq`	$≊$	`\bigcirc`	$◯$
`\thickapprox`	$\approx$	`\cong`	$≅$
`\asymp`	$\approx$	`\ncong`	$≇$
`\backslash`	$\$	`\dagger`	$†$
`\because`	$∵$	`\ddagger`	$‡$
`\between`	$≬$	`\dashv`	$⊣$
`\bottom` (`\bot`)	$⊥$	`\Vdash`	$⊩$
`\boxminus` (`\minusb`)	$⊟$	`\vDash`	$⊨$
`\boxplus` (`\plusb`)	$⊞$	`\nvDash`	$⊭$
`\boxtimes` (`\timesb`)	$⊠$	`\VDash`	$⊫$
`\bowtie`	$⋈$	`\nVDash`	$⊯$
`\bullet`	$•$	`\vdash`	$⊢$
`\cap` (`\intersection`)	$\cap$	`\nvdash`	$⊬$
`\cup` (`\union`)	$\cup$	`\Vvdash`	$⊪$
`\cdot`	$\cdot$	`\Diamond`	$⋄$

Command	Result	Command	Result
`\diamond`	$⋄$	`\gg`	$≫$
`\div`	$\div$	`\ggg`	$⋙$
`\equiv`	$\equiv$	`\geq` (`\ge`)	$\geq$
`\eqcirc`	$≖$	`\ngeq`	$≱$
`\neq` (`\ne`)	$\neq$	`\geqq`	$≧$
`\Bumpeq`	$≎$	`\ngeqq`	$≧̸$
`\bumpeq`	$≏$	`\geqslant`	$⩾$
`\circeq`	$≗$	`\ngeqslant`	$⩾̸$
`\doteq`	$≐$	`\eqslantgtr`	$⪖$
`\doteqdot`	$≑$	`\gneq`	$⪈$
`\fallingdotseq`	$≒$	`\gneqq`	$≩$
`\risingdotseq`	$≓$	`\gnapprox`	$⪊$
`\exists`	$\exists$	`\gnsim`	$⋧$
`\nexists`	$∄$	`\gtrapprox`	$⪆$
`\flat`	$♭$	`\gtrsim`	$≳$
`\forall`	$\forall$	`\gtrdot`	$⋗$
`\frown`	$⌢$	`\gtreqless`	$⋛$
`\gt`	$>$	`\gtreqqless`	$⪌$
`\ngtr`	$≯$	`\gtrless`	$≷$

Command	Result	Command	Result
`\gvertneqq`	$≩︀$	`\lesseqgtr`	$⋚$
`\in`	$\in$	`\lesseqqgtr`	$⪋$
`\notin`	$\notin$	`\lessgtr`	$≶$
`\ni`	$∋$	`\lesssim`	$≲$
`\notni`	$∌$	`\lnapprox`	$⪉$
`\lhd`	$⊲$	`\lneq`	$⪇$
`\unlhd`	$⊴$	`\lneqq`	$≨$
`\lt`	$<$	`\lnsim`	$⋦$
`\nless`	$≮$	`\ltimes`	$⋉$
`\ll`	$≪$	`\lvertneqq`	$≨︀$
`\lll`	$⋘$	`\lozenge`	$◊$
`\leq` (`\le`)	$\leq$	`\blacklozenge`	$⧫$
`\nleq`	$≰$	`\mid` (`\shortmid`)	$∣$
`\leqq`	$≦$	`\nmid`	$∤$
`\nleqq`	$≦̸$	`\nshortmid`	$∤$
`\leqslant`	$⩽$	`\models`	$⊧$
`\nleqslant`	$⩽̸$	`\multimap`	$⊸$
`\eqslantless`	$⪕$	`\nabla` (`\Del`)	$\nabla$
`\lessapprox`	$⪅$	`\natural`	$♮$
`\lessdot`	$⋖$	`\not` (`\neg`)	$\neg$

Command	Result	Command	Result
`\odot`	$⊙$	`\curlyeqprec`	$⋞$
`\odash` (`\circleddash`)	$⊝$	`\precsim`	$≾$
`\otimes`	$\otimes$	`\precnsim`	$⋨$
`\oplus`	$\oplus$	`\prime`	$'$
`\parallel`	$∥$	`\backprime`	$‵$
`\nparallel`	$∦$	`\propto`	$\propto$
`\shortparallel`	$∥$	`\varpropto`	$\propto$
`\nshortparallel`	$∦$	`\rhd`	$⊳$
`\partial`	$\partial$	`\unrhd`	$⊵$
`\perp`	$⊥$	`\rtimes`	$⋊$
`\pitchfork`	$⋔$	`\setminus`	$∖$
`\pm`	$\pm$	`\smallsetminus`	$﹨$
`\mp`	$\mp$	`\sharp`	$♯$
`\prec`	$≺$	`\sim`	$\sim$
`\nprec`	$⊀$	`\nsim`	$≁$
`\precapprox`	$⪷$	`\backsim`	$∽$
`\precnapprox`	$⪹$	`\simeq`	$≃$
`\preceq`	$⪯$	`\backsimeq`	$⋍$
`\npreceq`	$⪯̸$	`\thicksim`	$\sim$
`\preccurlyeq`	$≼$	`\smile`	$⌣$

Command	Result	Command	Result
`\subset`	$\subset$	`\succnsim`	$⋩$
`\nsubset`	$\subset⃒$	`\supset`	$\supset$
`\subseteq`	$\subseteq$	`\nsupset`	$\supset⃒$
`\nsubseteq`	$⊈$	`\supseteq`	$\supseteq$
`\subseteqq`	$⫅$	`\nsupseteq`	$⊉$
`\nsubseteqq`	$⫅̸$	`\supseteqq`	$⫆$
`\subsetneq`	$⊊$	`\supsetneq`	$⊋$
`\subsetneqq`	$⫋$	`\supsetneqq`	$⫌$
`\varsubsetneq`	$⊊︀$	`\varsupsetneq`	$⊋︀$
`\varsubsetneqq`	$⫋︀$	`\varsupsetneqq`	$⫌︀$
`\Subset`	$⋐$	`\Supset`	$⋑$
`\succ`	$≻$	`\square` (`\Box`)	$□$
`\nsucc`	$⊁$	`\blacksquare` (`\qed`)	$▪$
`\succeq`	$⪰$	`\sqcup`	$⊔$
`\nsucceq`	$⪰̸$	`\sqcap`	$⊓$
`\succapprox`	$⪸$	`\sqsubset`	$⊏$
`\succnapprox`	$⪺$	`\sqsubseteq`	$⊑$
`\succcurlyeq`	$≽$	`\sqsupset`	$⊐$
`\curlyeqsucc`	$⋟$	`\sqsupseteq`	$⊒$
`\succsim`	$≿$	`\star`	$⋆$

Command	Result
`\bigstar`	$★$
`\therefore`	$∴$
`\times`	$\times$
`\top`	$⊤$
`\triangle`	$▵$
`\triangledown`	$▿$
`\triangleleft`	$◃$
`\triangleright`	$▹$
`\blacktriangle`	$▴$
`\blacktriangledown`	$▾$
`\bigtriangleup`	$△$
`\bigtriangledown`	$▽$
`\uplus`	$⊎$
`\vee`	$\lor$
`\wedge`	$\land$
`\wr`	$≀$

Arrows

Command	Result
`\rightarrow` (`\to`)	$\to$
`\longrightarrow`	$⟶$
`\Rightarrow` (`\implies`)	$\Rightarrow$
`\hookrightarrow` (`\embedsin`)	$↪$
`\mapsto` (`\map`)	$\mapsto$
`\leftarrow`	$\leftarrow$
`\longleftarrow`	$⟵$
`\Leftarrow` (`\impliedby`)	$\Leftarrow$
`\hookleftarrow`	$↩$
`\leftrightarrow`	$\leftrightarrow$
`\Leftrightarrow`	$\Leftrightarrow$
`\Longleftrightarrow` (`\iff`)	$\Leftrightarrow$
`\nearrow` (`\nearr`)	$↗$
`\nwarrow` (`\nwarr`)	$↖$
`\searrow` (`\searr`)	$↘$
`\swarrow` (`\swarr`)	$↙$
`\neArrow` (`\neArr`)	$⇗$
`\nwArrow` (`\nwArr`)	$⇖$
`\seArrow` (`\seArr`)	$⇘$
`\swArrow` (`\swArr`)	$⇙$

Command	Result
`\darr`	$↓$
`\Downarrow`	$⇓$
`\uparr`	$↑$
`\Uparrow`	$⇑$
`\downuparrow` (`\duparr`, `\updarr`)	$↕$
`\Updownarrow`	$⇕$
`\leftsquigarrow`	$⇜$
`\rightsquigarrow`	$⇝$
`\leftrightsquigarrow`	$↭$
`\upuparrows`	$⇈$
`\rightleftarrows`	$⇄$
`\rightrightarrows`	$⇉$
`\dashleftarrow`	$⤎$
`\dashrightarrow`	$⤏$
`\curvearrowleft`	$↶$
`\curvearrowbotright`	$⤻$
`\downdownarrows`	$⇊$
`\leftleftarrows`	$⇇$
`\leftrightarrows`	$⇆$
`\righttoleftarrow`	$⟲$
`\lefttorightarrow`	$⟳$
`\circlearrowleft`	$↺$
`\circlearrowright`	$↻$

Delimiters

Command	Result
`(x)`	$(x)$
`[x]`	$[x]$
`\langle x \rangle` (`\lang x \rang`)	$⟨ x ⟩$
`\lbrace x \rbrace` (`\{x\}`)	${x}$
`\lceil x \rceil`	$⌈ x ⌉$
`\lfloor x \rfloor`	$⌊ x ⌋$
`\uparrow`	$↑$
`\downarrow`	$↓$
`\updownarrow`	$↕$
`x \vert y`	$x \| y$
`\Vert x \Vert`	$‖ x ‖$
`x/y`	$x / y$

Large Math Operators and Integrals

Command	Result
`\bigcup` (`\Union`)	$⋃$
`\bigcap` (`\Intersection`)	$⋂$
`\bigodot`	$⨀$
`\bigoplus` (`\Oplus`)	$⨁$
`\bigotimes` (`\Otimes`)	$⨂$
`\bigsqcup`	$⨆$
`\biguplus`	$⨄$
`\bigwedge` (`\Wedge`)	$⋀$
`\bigvee` (`\Vee`)	$⋁$
`\coprod` (`\coproduct`)	$∐$
`\prod` (`\product`)	$\prod$
`\sum`	$\sum$
`\int` (`\integral`)	$\int$
`\iint` (`\doubleintegral`)	$\iint$
`\iiint` (`\tripleintegral`)	$∭$
`\iiiint` (`\quadrupleintegral`)	$⨌$
`\oint` (`\conint`, `\contourintegral`)	$\oint$

Stretchiness?

Command	Result
`{\int e^{-\sqrt{\frac{a x + b}{c x + d}}} d x}`	$\int e^{- \sqrt{\frac{a x + b}{c x + d}}} d x$
`\int e^{-\sqrt{\frac{a x + b}{c x + d}}} d x`	$\int e^{- \sqrt{\frac{a x + b}{c x + d}}} d x$
`{\sum_{n=1}^\infty \frac{x^n}{\left(1- \frac{1}{x^n}\right)}}`	$\sum_{n = 1}^{∞} \frac{x^{n}}{(1 - \frac{1}{x^{n}})}$
`\sum_{n=1}^\infty \frac{x^n}{\left(1- \frac{1}{x^n}\right)}`	$\sum_{n = 1}^{∞} \frac{x^{n}}{(1 - \frac{1}{x^{n}})}$
`{\prod_{n=0}^\infty{\left(\frac{z^n-1}{z^n+1}\right)}^{-n}}`	$\prod_{n = 0}^{∞} {(\frac{z^{n} - 1}{z^{n} + 1})}^{- n}$
`\prod_{n=0}^\infty{\left(\frac{z^n-1}{z^n+1}\right)}^{-n}`	$\prod_{n = 0}^{∞} {(\frac{z^{n} - 1}{z^{n} + 1})}^{- n}$

Punctuation

Dots

Command	Result
`\dots`	$\dots$
`\ldots`	$\dots$
`\cdots`	$\dots$
`\ddots`	$⋱$
`\udots`	$⋰$
`\vdots`	$⋮$

Spaces

Command	Result
`a \, b`, `a \thinspace b`	$a b$ , $a b$
`a \: b`, `a \medspace b`	$a b$ , $a b$
`a \; b`, `a \thickspace b`	$a b$ , $a b$
`a \quad b`	$a b$
`a \qquad b`	$a b$
`a \! b`, `a \negspace b`	$a b$ , $a b$
`A + B \phantom{+ C} + D`	$A + B + D$
`\left( \space{5}{0}{20} \right)`	$()$

Note: the command \space{ht}{dp}{wd} creates a space of height ht, baseline depth dp, and width wd where ht and dp are measured in tenths of an ex (the height of the letter x) and wd is measured in tenths of an em (the width of the letter M).

Accents

Command	Result
`\bar{x}`	$\bar{x}$
`\overline{a b c}`	$\bar{a b c}$
( = `\closure{a b c}`)	$\bar{a b c}$
( = `\widebar{a b c}`)	$\bar{a b c}$
`\vec{x}`	$\overset{⇀}{x}$
`\widevec{a b c}`	$\overset{⇀}{a b c}$
`\dot{x}`	$\dot{x}$
`\ddot{x}`	$\ddot{x}$
`\tilde{x}`	$\tilde{x}$
`\widetilde{a b c}`	$\tilde{a b c}$
`\check{x}`	$\overset{ˇ}{x}$
`\widecheck{a b c}`	$\overset{ˇ}{a b c}$
`\hat{x}`	$\hat{x}$
`\widehat{a b c}`	$\hat{a b c}$
`\slash{D}`	$D$

Symbols

Command	Result
`\aleph`	$ℵ$
`\beth`	$ℶ$
`\ell`	$ℓ$
`\hbar`	$ℏ$
`\Im`	$ℑ$
`\imath`	$ı$
`\jmath`	$ȷ$
`\eth`	$ð$
`\Re`	$ℜ$
`\wp`	$℘$
`\infty` (`\infinity`)	$∞$
`\empty` (`\emptyset`)	$\emptyset$
`\varnothing`	$\emptyset$

Fractions, Sub/Superscripts and Roots

\frac{x}{y} $\frac{x}{y}$
\tfrac{x}{y} $\frac{x}{y}$
\binom{m}{n} $(\binom{m}{n})$
{x \over y} $\frac{x}{y}$
{x \atop y} $\binom{x}{y}$
\sum_{\substack{0 \leq i \leq n \\ 0 \leq j \leq m}}A_{ij} $\sum_{\begin{array}{c} 0 \leq i \leq n \\ 0 \leq j \leq m \end{array}} A_{ij}$
\overset{u}{\overbrace{w x y z}} $\overset{u}{\overset{⏞}{w x y z}}$
\underset{u}{\underbrace{v w x y z}} $\underset{u}{\underset{⏟}{v w x y z}}$
\underset{x y z}{\longrightarrow} $\underset{x y z}{⟶}$
\overset{x y z}{\to} $\overset{x y z}{\to}$
( = \stackrel{x y z}{\to}), $\overset{x y z}{\to}$
\underoverset{x y z}{2}{\Rightarrow} $\Rightarrow_{x y z}^{2}$
\tensor{X}{_i_j^k^l} $X_{i}_{j}^{k}^{l}$
\multiscripts{^2_0_1}{X}{^j_i_k} ${}^{2}_{0}_{1}X^{j}_{i}_{k}$
\sqrt{\frac{a x +b}{c x + d}} $\sqrt{\frac{a x + b}{c x + d}}$
\root{n}{x} $\sqrt[n]{x}$
\mathop{plim}{X_n} $plim X_{n}$

Sizes

Command	Result
`\displaystyle{\prod}`	$\prod$
`\textstyle{\prod}`	$\prod$
`\textsize{\prod}`	$\prod$
`\scriptsize{\prod}`	$\prod$
`\scriptscriptsize{\prod}`	$\prod$

Styles

Command	Result
`\mathit{A B C D E F G H I J K L M N O P Q R S T U V W X Y Z}`	$A B C D E F G H I J K L M N O P Q R S T U V W X Y Z$
`\mathbf{ABCDEFGHIJKLMNOPQRSTUVWXYZ}` (`\boldsymbol{ABCDEFGHIJKLMNOPQRSTUVWXYZ}`)	$ABCDEFGHIJKLMNOPQRSTUVWXYZ$
`\mathrm{A B C D E F G H I J K L M N O P Q R S T U V W X Y Z}`	$ABCDEFGHIJKLMNOPQRSTUVWXYZ$
`\mathbb{ABCDEFGHIJKLMNOPQRSTUVWXYZ}`	$𝔸𝔹ℂ𝔻𝔼𝔽𝔾ℍ𝕀𝕁𝕂𝕃𝕄ℕ𝕆ℙℚℝ𝕊𝕋𝕌𝕍𝕎𝕏𝕐ℤ$
`\mathbb{abcdefghijklmnopqrstuvwxyz}`	$𝕒𝕓𝕔𝕕𝕖𝕗𝕘𝕙𝕚𝕛𝕜𝕝𝕞𝕟𝕠𝕡𝕢𝕣𝕤𝕥𝕦𝕧𝕨𝕩𝕪𝕫$
`\mathfrak{ABCDEFGHIJKLMNOPQRSTUVWXYZ}` (`\mathfr{ABCDEFGHIJKLMNOPQRSTUVWXYZ}`)	$𝔄𝔅ℭ𝔇𝔈𝔉𝔊ℌℑ𝔍𝔎𝔏𝔐𝔑𝔒𝔓𝔔ℜ𝔖𝔗𝔘𝔙𝔚𝔛𝔜ℨ$
`\mathfrak{abcdefghijklmnopqrstuvwxyz}`	$𝔞𝔟𝔠𝔡𝔢𝔣𝔤𝔥𝔦𝔧𝔨𝔩𝔪𝔫𝔬𝔭𝔮𝔯𝔰𝔱𝔲𝔳𝔴𝔵𝔶𝔷$
`\mathcal{ABCDEFGHIJKLMNOPQRSTUVWXYZ}`	$𝒜ℬ𝒞𝒟ℰℱ𝒢ℋℐ𝒥𝒦ℒℳ𝒩𝒪𝒫𝒬ℛ𝒮𝒯𝒰𝒱𝒲𝒳𝒴𝒵$
`\mathcal{abcdefghijklmnopqrstuvwxyz}`	$𝒶𝒷𝒸𝒹ℯ𝒻ℊ𝒽𝒾𝒿𝓀𝓁𝓂𝓃ℴ𝓅𝓆𝓇𝓈𝓉𝓊𝓋𝓌𝓍𝓎𝓏$

Matrices

No delimiters

\begin{matrix}
  x_{11} & x_{12} \\
  x_{21} & x_{22}
\end{matrix}

$\begin{matrix} x_{11} & x_{12} \\ x_{21} & x_{22} \end{matrix}$

Parenthesis

\begin{pmatrix}
x_{11} & x_{12} \\
x_{21} & x_{22}
\end{pmatrix}

$(\begin{matrix} x_{11} & x_{12} \\ x_{21} & x_{22} \end{matrix})$

Bracketed

\begin{bmatrix}
x_{11} & x_{12} \\
x_{21} & x_{22}
\end{bmatrix}

$[\begin{matrix} x_{11} & x_{12} \\ x_{21} & x_{22} \end{matrix}]$

Braces

\begin{Bmatrix}
x_{11} & x_{12} \\
x_{21} & x_{22}
\end{Bmatrix}

${\begin{matrix} x_{11} & x_{12} \\ x_{21} & x_{22} \end{matrix}}$

Vertical bars

\begin{vmatrix}
x_{11} & x_{12} \\
x_{21} & x_{22}
\end{vmatrix}

$∣ \begin{matrix} x_{11} & x_{12} \\ x_{21} & x_{22} \end{matrix} ∣$

Double vertical bars

\begin{Vmatrix}
x_{11} & x_{12} \\
x_{21} & x_{22}
\end{Vmatrix}

$∥ \begin{matrix} x_{11} & x_{12} \\ x_{21} & x_{22} \end{matrix} ∥$

Small

\begin{smallmatrix}
x_{11} & x_{12} \\
x_{21} & x_{22}
\end{smallmatrix}

$\begin{matrix} x_{11} & x_{12} \\ x_{21} & x_{22} \end{matrix}$

Alignment

Cases

f(x|\lambda) =
\begin{cases}
\lambda e^{-\lambda x} & x \geq 0, \\
0 & \text{otherwise}
\end{cases}

$f (x | λ) = {\begin{array}{ll} λ e^{- λ x} & x \geq 0, \\ 0 & otherwise \end{array}$

Aligned

\begin{aligned}
y_1 &= \beta_{11} + \beta_{12} x + \varepsilon_1 \\
y_2 &= \alpha_{21} y_1 + \beta_{21} + \beta_{22} x + \varepsilon_2
\end{aligned}

$\begin{aligned} y_{1} & = β_{11} + β_{12} x + ε_{1} \\ y_{2} & = α_{21} y_{1} + β_{21} + β_{22} x + ε_{2} \end{aligned}$

Gathered

\begin{gathered}
y_1 = \beta_{11} + \beta_{12} x + \varepsilon_1 \\
y_2 = \alpha_{21} y_1 + \beta_{21} + \beta_{22} x + \varepsilon_2
\end{gathered}

$\begin{matrix} y_{1} = β_{11} + β_{12} x + ε_{1} \\ y_{2} = α_{21} y_{1} + β_{21} + β_{22} x + ε_{2} \end{matrix}$

Split

\begin{split}
\mathop{E}\frac{\partial \ln L}{\partial \theta}
  &=\mathop{E}\left[\frac{1}{L} \frac{\partial L}{\partial \theta}\right]\\
  &=\int\left[\frac{1}{L} \frac{\partial L}{\partial \theta}\right] L\;dz\\
  &=\int\frac{\partial L}{\partial \theta}\;dz
\end{split}

$\begin{aligned} E \frac{\partial \ln L}{\partial θ} & = E [\frac{1}{L} \frac{\partial L}{\partial θ}] \\ = \int [\frac{1}{L} \frac{\partial L}{\partial θ}] L dz \\ = \int \frac{\partial L}{\partial θ} dz \end{aligned}$

Colors

Named HTML colors are supported: aqua, black, blue, fuchsia, gray, green, lime, maroon, navy, olive, purple, red, silver, teal, white, and yellow as well as RGB hexadecimal colors of the form #rgb or #rrggbb.

Foreground

a { b \color{red} c \color{#0F0} d } e

$a b c d e$

Background

a {b \bgcolor{red} c \bgcolor{#0F0} d } e

$a b c d e$

{\bgcolor{red} a b} c {\bgcolor{#0F0}d e}

$a b c d e$