Extension:Math/Native MathML/Reported Cases

Copy of https://www.mediawiki.org/wiki/Extension:Math/Native_MathML/Reported_Cases

Some reported cases.

Reported cases.

See Extension:Math/Native_MathML/Operators for complete set of operators

Cases 1-9

Reported Phabricator bugs

Number	LaTex	Rendering	Notes
1a T377057 open	\text{let}\ {n \to +\infty}	$\text{let}n\to +\mathrm{\infty }$ ${\text{let}}\ {n\to +\infty }$	Too much space around operators when used in limits in MathML mode. Spaces should appear in normal mode,
1b	\lim_{n\to +\infty}\left(1+\frac 1n\right)^n	$\underset{n\to +\mathrm{\infty }}{\lim }{(1+\frac{1}{n})}^n$ $\lim _{n\to +\infty }\left(1+{\frac {1}{n}}\right)^{n}$	Spaces should not appear in a limit
2 T375935 Done	\lim_{n \to +\infty}\frac{\sqrt{2\pi n} }{n!}\left(\frac{n}{e}\right)^n = 1	$\underset{n\to +\mathrm{\infty }}{\lim }\frac{\sqrt{2\pi n}}{n!}{\left(\frac{n}{e}\right)}^n=1$ $\lim _{n\to +\infty }{\frac {\sqrt {2\pi n}}{n!}}\left({\frac {n}{e}}\right)^{n}=1$	The factorial symbol ! should be upright, it is sloping in Clients-side mathjax mode.
3 T375907 Done	\det(A)=\sum_{\sigma\in S_n} e(\sigma)\prod_{i=1}^n a_{i,\sigma_i}	$\det (A)=\sum _{\sigma \in S_n}e(\sigma )\prod _{i=1}^n{a}_{i,{\sigma }_i}$ $\det(A)=\sum _{\sigma \in S_{n}}e(\sigma )\prod _{i=1}^{n}a_{i,\sigma _{i}}$	\sum_condition puts condition in the in wrong position in MathML and client-side MathJax modes
4a T375349 Done	\textstyle \int\limits_{-N}^{N} e^x dx	$\underset{-N}{\overset{N}{\int }}{e}^{x}dx$ $\textstyle \int \limits _{-N}^{N}e^{x}dx$	\int_a^b limits in incorrect position in MathML mode.
4b Done	\textstyle \int_{-N}^{N} e^x dx	${\int }_{-N}^N{e}^{x}dx$ $\textstyle \int _{-N}^{N}e^{x}dx$
4c Done	\displaystyle \int\limits_{-N}^{N} e^x dx	$\underset{-N}{\overset{N}{\int }}{e}^{x}dx$ $\displaystyle \int \limits _{-N}^{N}e^{x}dx$
4d	\displaystyle \int_{-N}^{N} e^x dx	$\underset{-N}{\overset{N}{\int }}{e}^{x}dx$ $\displaystyle \int _{-N}^{N}e^{x}dx$
4e Done	\int\limits_{1}^{3}\frac{e^3/x}{x^2}\, dx	$\underset{1}{\overset{3}{\int }}\frac{e^3/x}{x^2}dx$ $\int \limits _{1}^{3}{\frac {e^{3}/x}{x^{2}}}\,dx$
4f	\int_{1}^{3}\frac{e^3/x}{x^2}\, dx	$\underset{1}{\overset{3}{\int }}\frac{e^3/x}{x^2}dx$ $\int _{1}^{3}{\frac {e^{3}/x}{x^{2}}}\,dx$
4h Done	\int\limits_{1}^{3}\frac{\frac{e^3}{x} }{\frac{x^2}{5} }\, dx	$\underset{1}{\overset{3}{\int }}\frac{\frac{e^3}{x}}{\frac{x^2}{5}}dx$ $\int \limits _{1}^{3}{\frac {\frac {e^{3}}{x}}{\frac {x^{2}}{5}}}\,dx$
4i	\int_{1}^{3}\frac{\frac{e^3}{x} }{\frac{x^2}{5} }\, dx	$\underset{1}{\overset{3}{\int }}\frac{\frac{e^3}{x}}{\frac{x^2}{5}}dx$ $\int _{1}^{3}{\frac {\frac {e^{3}}{x}}{\frac {x^{2}}{5}}}\,dx$
5a T375317 Done Works on beta	\begin{align} \frac{dy}{du} &= f'(u) = e^u, \\ \frac{du}{dv} &= g'(v) = \cos v, \\ \frac{dv}{dx} &= h'(x) = 2x. \end{align}	$\begin{array}{cc}\frac{dy}{du}& =f^{\prime }(u)=e^u,\\ \frac{du}{dv}& =g^{\prime }(v)=\cos v,\\ \frac{dv}{dx}& =h^{\prime }(x)=2x.\end{array}$ ${\begin{aligned}{\frac {dy}{du}}&=f'(u)=e^{u},\\{\frac {du}{dv}}&=g'(v)=\cos v,\\{\frac {dv}{dx}}&=h'(x)=2x.\end{aligned}}$	\align aligns fields in the centre rather that on the left in MathML mode
5b	\begin{align} z & = a \\ f(x,y,z) & = x + y + z \end{align}	$\begin{array}{cc}z& =a\\ f(x,y,z)& =x+y+z\end{array}$ ${\begin{aligned}z&=a\\f(x,y,z)&=x+y+z\end{aligned}}$
5c Done	f(n) = \begin{cases} n/2, & \text{if }n\text{ is even} \\ 3n+1, & \text{if }n\text{ is odd} \end{cases}	$f(n)=\{\begin{array}{cc}n/2,& \text{if }n\text{ is even}\\ 3n+1,& \text{if }n\text{ is odd}\end{array}$ $f(n)={\begin{cases}n/2,&{\text{if }}n{\text{ is even}}\\3n+1,&{\text{if }}n{\text{ is odd}}\end{cases}}$
5d Done	\begin{align} a&=b & c&=d & e&=f\\ aa&=bb & cc&=dd & ee&=ff\\ aaa&=bbb & ccc&=ddd & eee&=fff \end{align}	$\begin{array}{cccccc}a& =b& c& =d& e& =f\\ aa& =bb& cc& =dd& ee& =ff\\ aaa& =bbb& ccc& =ddd& eee& =fff\end{array}$ ${\begin{aligned}a&=b&c&=d&e&=f\\aa&=bb&cc&=dd&ee&=ff\\aaa&=bbb&ccc&=ddd&eee&=fff\end{aligned}}$
5e	\begin{align} x&=y & X&=Y & a&=b+c\\ x'&=y' & X'&=Y' & a'&=b\\ x+x'&=y+y' & X+X'&=Y+Y' & a'b&=c'b \end{align}	$\begin{array}{cccccc}x& =y& X& =Y& a& =b+c\\ x^{\prime }& =y^{\prime }& X^{\prime }& =Y^{\prime }& a^{\prime }& =b\\ x+x^{\prime }& =y+y^{\prime }& X+X^{\prime }& =Y+Y^{\prime }& a^{\prime }b& =c^{\prime }b\end{array}$ ${\begin{aligned}x&=y&X&=Y&a&=b+c\\x'&=y'&X'&=Y'&a'&=b\\x+x'&=y+y'&X+X'&=Y+Y'&a'b&=c'b\end{aligned}}$
6a T375295 Done	\begin{align} \frac{dy}{du} &= f'(u) = e^u, \\[6pt] \frac{du}{dv} &= g'(v) = \cos v, \\[6pt] \frac{dv}{dx} &= h'(x) = 2x. \end{align}	$\begin{array}{cc}\frac{dy}{du}& =f^{\prime }(u)=e^u,\\ \frac{du}{dv}& =g^{\prime }(v)=\cos v,\\ \frac{dv}{dx}& =h^{\prime }(x)=2x.\end{array}$ ${\begin{aligned}{\frac {dy}{du}}&=f'(u)=e^{u},\\[6pt]{\frac {du}{dv}}&=g'(v)=\cos v,\\[6pt]{\frac {dv}{dx}}&=h'(x)=2x.\end{aligned}}$	\begin{align} with font sizes specified show font size annotation [6pt] in MathML mode
6b	\begin{align} \varpi &= [2,1,1,1,1,1,4,1,2,\ldots], \\[8mu] 2\varpi &= [5,4,10,2,1,2,3,29,\ldots], \\[5mu] \frac{\varpi}{2} &= [1,3,4,1,1,1,5,2,\ldots], \\[2mu] \frac{\varpi}{\pi} &= [0,1,5,21,3,4,14,\ldots]. \end{align}	$\begin{array}{cc}\varpi & =[2,1,1,1,1,1,4,1,2,\dots ],\\ 2\varpi & =[5,4,10,2,1,2,3,29,\dots ],\\ \frac{\varpi }{2}& =[1,3,4,1,1,1,5,2,\dots ],\\ \frac{\varpi }{\pi }& =[0,1,5,21,3,4,14,\dots ].\end{array}$ ${\begin{aligned}\varpi &=[2,1,1,1,1,1,4,1,2,\ldots ],\\[8mu]2\varpi &=[5,4,10,2,1,2,3,29,\ldots ],\\[5mu]{\frac {\varpi }{2}}&=[1,3,4,1,1,1,5,2,\ldots ],\\[2mu]{\frac {\varpi }{\pi }}&=[0,1,5,21,3,4,14,\ldots ].\end{aligned}}$
7a T375861 reopened	a\operatorname{sn}b	$a\mathrm{sn}b$ $a\operatorname {sn} b$	a\operatorname{sn}b rendered with no spaces before and after operator in MathML mode. Works in Firefox by not Chrome
7b	a(\operatorname{sn}(b)), a[\operatorname{sn}[b]], a\{\operatorname{sn}\{b\}\}	$a(\mathrm{sn}(b)),a[\mathrm{sn}[b]],a\{\mathrm{sn}\{b\}\}$ $a(\operatorname {sn} (b)),a[\operatorname {sn} [b]],a\{\operatorname {sn} \{b\}\}$	no space need here
7c	\operatorname{G}(V, g)	$\mathrm{G}(V,g)$ $\operatorname {G} (V,g)$	no space need here
8a T375907 Done	\displaystyle\sum_{n\in\mathbb{Z} }	$\sum _{n\in \mathbb{Z}}$ $\displaystyle \sum _{n\in \mathbb {Z} }$	\sum_condition puts condition in the in wrong position in MathML and client-side MathJax modes
8b	\displaystyle\prod_{n\in\mathbb{Z} }	$\prod _{n\in \mathbb{Z}}$ $\displaystyle \prod _{n\in \mathbb {Z} }$
8b	\displaystyle\prod_{n\in\mathbb{Z} }^{n\ne 5}	$\prod _{n\in \mathbb{Z}}^{n\ne 5}$ $\displaystyle \prod _{n\in \mathbb {Z} }^{n\neq 5}$	with superscript rendered below
8c	\sum_{n>k} R \quad \prod_{n>k} P \quad \coprod_{n>k} RR	$\sum _{n>k}R\prod _{n>k}P\coprod _{n>k}RR$ $\sum _{n>k}R\quad \prod _{n>k}P\quad \coprod _{n>k}RR$
8d	\bigcup_{n>k} J \quad \biguplus_{n>k} L \quad \bigcap_{n>k} N	$\bigcup _{n>k}J\underset{n>k}{⨄}L\bigcap _{n>k}N$ $\bigcup _{n>k}J\quad \biguplus _{n>k}L\quad \bigcap _{n>k}N$
8e	\bigoplus_{n>k} W \quad \bigotimes_{n>k} V \quad \bigodot_{n>k} F	$\underset{n>k}{⨁}W\underset{n>k}{⨂}V\underset{n>k}{⨀}F$ $\bigoplus _{n>k}W\quad \bigotimes _{n>k}V\quad \bigodot _{n>k}F$
8f	\bigvee_{n>k} V \quad \bigwedge_{n>k} W \quad \bigsqcup_{n>k} S	$\underset{n>k}{\bigvee }V\underset{n>k}{\bigwedge }W\underset{n>k}{⨆}S$ $\bigvee _{n>k}V\quad \bigwedge _{n>k}W\quad \bigsqcup _{n>k}S$
8g	\int_{n>k} U \quad \oint_{n>k} T \quad \iint_{n>k} S	$\underset{n>k}{\int }U{\oint }_{n>k}T\underset{n>k}{\iint }S$ $\int _{n>k}U\quad \oint _{n>k}T\quad \iint _{n>k}S$	Default for integrals is to the side
8h	\min_x\ \max_x\ \sup_x\ \inf_x\ \liminf_x	$\underset{x}{\min }\underset{x}{\max }\underset{x}{\sup }\underset{x}{\inf }\underset{x}{\mathrm{lim\; inf}}$ $\min _{x}\ \max _{x}\ \sup _{x}\ \inf _{x}\ \liminf _{x}$
8i	\lim_x\ \varliminf_x\ \varlimsup_x\ \varinjlim_x\ \varprojlim_x\ \limsup_x\ \injlim_x\ \projlim_x	$\underset{x}{\lim }\underset{x}{\underset{―}{\lim }}\underset{x}{\bar{\lim }}\underset{x}{\underrightarrow{\lim }}\underset{x}{\underleftarrow{\lim }}\underset{x}{\mathrm{lim\; sup}}\underset{x}{\mathrm{inj\; lim}}\underset{x}{\mathrm{proj\; lim}}$ $\lim _{x}\ \varliminf _{x}\ \varlimsup _{x}\ \varinjlim _{x}\ \varprojlim _{x}\ \limsup _{x}\ \injlim _{x}\ \projlim _{x}$
8j	\det_x\ \gcd_x\ \Pr_x	$\underset{x}{\det }\underset{x}{\gcd }\underset{x}{\mathrm{Pr}}$ $\det _{x}\ \gcd _{x}\ \Pr _{x}$
9a T375274 Done	\arccot(x), \arccsc(x), \arcsec(x), \sen(x), \sgn(x)	$\mathrm{arccot}(x),\mathrm{arccsc}(x),\mathrm{arcsec}(x),\mathrm{sen}(x),\mathrm{sgn}(x)$ $\operatorname {arccot} (x),\operatorname {arccsc} (x),\operatorname {arcsec} (x),\operatorname {sen} (x),\operatorname {sgn} (x)$	mediawiki_function_names math functions eat the following paren in native MML mode
9b	\arcsin(x), \sin(x)	$\arcsin (x),\sin (x)$ $\arcsin(x),\sin(x)$
9c	\operatorname{arccot}(x), \operatorname{arcsin}(x), \operatorname{sgn}(x), \operatorname{sin}(x)	$\mathrm{arccot}(x),\arcsin (x),\mathrm{sgn}(x),\sin (x)$ $\operatorname {arccot} (x),\operatorname {arcsin} (x),\operatorname {sgn} (x),\operatorname {sin} (x)$

Cases 10-20

Reported Phabricator bugs

10a T375959 Done	\langle \psi | B^b \quad \lbrace \psi | B^b \quad \lbrack \psi | B^b	$⟨\psi |B^b\{\psi |B^b[\psi |B^b$ $\langle \psi |B^{b}\quad \lbrace \psi |B^{b}\quad \lbrack \psi |B^{b}$	Use stretchy="false" for \langle and \rangle in MathML mode
10b	B^b |\psi\rangle \quad B^b | \psi \rbrace \quad B^b | \psi \rbrack \quad B^b \vert\psi\rangle	$B^b|\psi ⟩B^b|\psi \}{B}^b|\psi ]B^b|\psi ⟩$ $B^{b}|\psi \rangle \quad B^{b}|\psi \rbrace \quad B^{b}|\psi \rbrack \quad B^{b}\vert \psi \rangle$
10c	B^b \left|\psi\right\rangle \quad \psi \left|B^b\right\rangle	$B^b|\psi ⟩\psi |B^b⟩$ $B^{b}\left|\psi \right\rangle \quad \psi \left|B^{b}\right\rangle$	Explicitly specifying \left and \right work
10d	B^b |\psi\rangle	$B^b|\psi ⟩$ $B^{b}|\psi \rangle$
11a T375960 Template:Partially done	\updownarrow \big\updownarrow \Big\updownarrow \bigg\updownarrow \Bigg\updownarrow \dots \Bigg\Updownarrow \bigg\Updownarrow \Big\Updownarrow \big\Updownarrow \Updownarrow	$\updownarrow \updownarrow \updownarrow \updownarrow \updownarrow \dots \Updownarrow \Updownarrow \Updownarrow \Updownarrow \Updownarrow$ $\updownarrow {\big \updownarrow }{\Big \updownarrow }{\bigg \updownarrow }{\Bigg \updownarrow }\dots {\Bigg \Updownarrow }{\bigg \Updownarrow }{\Big \Updownarrow }{\big \Updownarrow }\Updownarrow$	\Big/ and \Big\backslash etc are too small in MathML mode.
11b	/ \big/ \Big/ \bigg/ \Bigg/ \dots \Bigg\backslash \bigg\backslash \Big\backslash \big\backslash \backslash	$/////\dots \backslash \backslash \backslash \backslash \mathrm{\setminus }$ $/{\big /}{\Big /}{\bigg /}{\Bigg /}\dots {\Bigg \backslash }{\bigg \backslash }{\Big \backslash }{\big \backslash }\backslash$	Partially works in Firefox, upstream problems in chrome, some have almost zero use case
12a T375974 Done	f:X\to Y	$f:X\to Y$ $f:X\to Y$	Colon in f : X \to Y should be an operator in MathML mode.
12b	D \And E	$D\mathrm{\&}E$ $D\And E$	Has more space in LaTeX
12c	A \smile B \frown B	$A⌣B⌢B$ $A\smile B\frown B$
12d	A \therefore B \because B	$A\therefore B\because B$ $A\therefore B\because B$
12e	B \overset{\underset{\mathrm{def} }{} }{=} B	$B\stackrel{\mathrm{d}\mathrm{e}\mathrm{f}}{=}B$ $B{\overset {\underset {\mathrm {def} }{}}{=}}B$
12f	A \ulcorner B \urcorner B \llcorner B \lrcorner C	$A⌜B⌝B⌞B⌟C$ $A\ulcorner B\urcorner B\llcorner B\lrcorner C$
12g	A \blacktriangle B \blacktriangledown B	$A▴B▾B$ $A\blacktriangle B\blacktriangledown B$
12h	\forall(\ulcorner\phi\urcorner\in\Sigma^0_n\cup\Pi^0_n) \implies\mathrm{Tr}_n(\ulcorner\phi(y_0,\ldots,y_n)^*\urcorner))	$\mathrm{\forall }(⌜\varphi ⌝\in {\Sigma }_n^0\cup {\Pi }_n^0)⟹{\mathrm{T}\mathrm{r}}_n(⌜\varphi (y_0,\dots ,y_n{)}^{*}⌝))$ $\forall (\ulcorner \phi \urcorner \in \Sigma _{n}^{0}\cup \Pi _{n}^{0})\implies \mathrm {Tr} _{n}(\ulcorner \phi (y_{0},\ldots ,y_{n})^{*}\urcorner ))$	en:Reflection principle
13 T376546 Done	\|A\|, D(p\|q)	$\Vert A\Vert ,D(p\Vert q)$ $\|A\|,D(p\|q)$	\| should render as a double pipe || rather than a single one |. In MathML and Client-side MathJax modes.
14 T376558 Done	q(v)=|v|^2\quad q(v)=\|v\|^2 \quad q(v)=\|v\|_A	$q(v)=|v{|}^{2}q(v)=\Vert v{\Vert }^{2}q(v)=\Vert v{\Vert }_A$ $q(v)=|v|^{2}\quad q(v)=\|v\|^{2}\quad q(v)=\|v\|_{A}$	Vertical alignment of pipes with superscripts wrong in mathml mode
15 T376829 Done	\cancel{y}	$\cancel{y}$ ${\cancel {y}}$	\cancel{y} the strike is not visable in native mathml mode
16 T376838 Done	\begin{array}{lcr} z & = & a \\ f(x,y,z) & = & x + y + z \end{array}	$\begin{array}{ccc}z& =& a\\ f(x,y,z)& =& x+y+z\end{array}$ ${\begin{array}{lcr}z&=&a\\f(x,y,z)&=&x+y+z\end{array}}$	\begin{array}{lcr} does not respect the optional alignment argument in MathML mode
17 T376883 open	\frac{x}{x}\quad\frac{x}{y}\quad\frac{x}{l}\quad\frac{x}{2}\quad\frac{x}{x}\quad\frac{y}x\quad\frac{l}x\quad\frac{2}x	$\frac{x}{x}\frac{x}{y}\frac{x}{l}\frac{x}{2}\frac{x}{x}\frac{y}{x}\frac{l}{x}\frac{2}{x}$ ${\frac {x}{x}}\quad {\frac {x}{y}}\quad {\frac {x}{l}}\quad {\frac {x}{2}}\quad {\frac {x}{x}}\quad {\frac {y}{x}}\quad {\frac {l}{x}}\quad {\frac {2}{x}}$	Bad spacing for fractions with Safari in MathML mode
18 T376887 Done	<math>\cfrac{x}{1 + \cfrac{\cancel{y}}{\cancel{y}}} = \cfrac{x}{2}</math> <math>\begin{array}{lcr} z & = & a \\ f(x,y,z) & = & x + y + z \end{array}</math>	MediaWiki MathML: $\frac{x}{1+\frac{\cancel{y}}{\cancel{y}}}=\frac{x}{2}$ $\begin{array}{ccc}z& =& a\\ f(x,y,z)& =& x+y+z\end{array}$ MathJax SVG: ${\cfrac {x}{1+{\cfrac {\cancel {y}}{\cancel {y}}}}}={\cfrac {x}{2}}$ ${\begin{array}{lcr}z&=&a\\f(x,y,z)&=&x+y+z\end{array}}$	Formula in separate paragraphs displayed on the same line in Safari on Mac OS in MathML mode
19a T377057 open	\lim_{n\to +\infty}\left(1+\frac 1n\right)^n	$\underset{n\to +\mathrm{\infty }}{\lim }{(1+\frac{1}{n})}^n$ $\lim _{n\to +\infty }\left(1+{\frac {1}{n}}\right)^{n}$	Too much space around operators when used in limits in MathML mode
19b	\text{let}\ {n \to +\infty}	$\text{let}n\to +\mathrm{\infty }$ ${\text{let}}\ {n\to +\infty }$	More space used when not in a script
20 T378433 Done	\mathfrak{ABCDEFGHI}	$𝔄𝔅ℭ𝔇𝔈𝔉𝔊ℌ\Im$ ${\mathfrak {ABCDEFGHI}}$	\mathfrak{ABCDEFGHI} appears as normal type in MathML mode on Chrome on Windows. Still broken for MathJax

New cases as of Aug 2025

Reported Phabricator bugs

Number	LaTex	Rendering	Notes
T375337 Done	\frac{a}{b/2}	$\frac{a}{b/2}$ ${\frac {a}{b/2}}$	Too much space around / in MathML formatting mode
T375340 Done	\binom{n}{k/2}	$(\genfrac{}{}{0ex}{}{n}{k/2})$ ${\binom {n}{k/2}}$	Too much space between fences and content in MathML formatting mode
T375346 declined	\begin{pmatrix} \begin{pmatrix}a&b\\ c&d\end{pmatrix} & \begin{pmatrix}e&f\\ g&h\end{pmatrix} \\ 0 & \begin{pmatrix}i&j\\ k&l\end{pmatrix} \end{pmatrix}	$\left(\begin{array}{cc}\left(\begin{array}{cc}a& b\\ c& d\end{array}\right)& \left(\begin{array}{cc}e& f\\ g& h\end{array}\right)\\ 0& \left(\begin{array}{cc}i& j\\ k& l\end{array}\right)\end{array}\right)$ ${\begin{pmatrix}{\begin{pmatrix}a&b\\c&d\end{pmatrix}}&{\begin{pmatrix}e&f\\g&h\end{pmatrix}}\\0&{\begin{pmatrix}i&j\\k&l\end{pmatrix}}\end{pmatrix}}$	Lots of space around the cells in matrix evironments in MathML mode
T377167 Done	\begin{array}{|c|c|c|} \hline a_{11} & a_{12} & a_{13} \\ a_{21} & a_{22} & a_{23} \\ \hline a_{31} & a_{32} & a_{33} \\ \hline \end{array}	$\begin{array}{ccc}{a}_{11}& a_{12}& a_{13}\\ a_{21}& a_{22}& a_{23}\\ a_{31}& a_{32}& a_{33}\end{array}$ ${\begin{array}{|c|c|c|}\hline a_{11}&a_{12}&a_{13}\\a_{21}&a_{22}&a_{23}\\\hline a_{31}&a_{32}&a_{33}\\\hline \end{array}}$	Remove menclose in context of matrix representation
T378257 duplicate	\operatorname{sn}\limits_x	$\underset{x}{\mathrm{sn}}$ $\operatorname {sn} \limits _{x}$	\limits is rendered verbatim in MathML mode and client-side MathJax
T379359 open	\cancelto{x}{y}	${\xcancel{y}}^x$ ${\cancelto {x}{y}}$	Fix \cancelto{y} in native MathML mode Chrome
T380184 Done	\operatorname{vec}	$\mathrm{vec}$ $\operatorname {vec}$	$\mathrm{vec}$ crashes with native MathML
T380654 reopened	\begin{aligned}{\bar {X} }_{1}&=(X_{1,1}+\cdots +X_{1,n_{1} })/n_{1}\\[60pt]{\bar {X} }_{2}&=(X_{2,1}+\cdots +X_{2,n_{2} })/n_{2}\end{aligned}	MathML $\begin{array}{cc}{\overline{X}}_1& =(X_{1,1}+\cdots +X_{1,n_1})/n_1\\ {\overline{X}}_2& =(X_{2,1}+\cdots +X_{2,n_2})/n_2\end{array}$ SVG ${\begin{aligned}{\bar {X}}_{1}&=(X_{1,1}+\cdots +X_{1,n_{1}})/n_{1}\\[60pt]{\bar {X}}_{2}&=(X_{2,1}+\cdots +X_{2,n_{2}})/n_{2}\end{aligned}}$	vertical space between multline equations is ignored. Dupe of T375295
T381102 Done	\left(a\right)'	$\left(a\right)$ $\left(a\right)'$	$\left(a\right)$ in MathML and MathJax renders with one prime symbol too much
T381305 duplicate	<blockquote>quote</blockquote>Let <math forcemathmode=native>n</math> be an integer Let <math>n</math> be an integer <div style="display: float">quote</div>.	MathML quote Let $n$ be an integer Let $n$ be an integer quote . SVG quote Let $n$ be an integer Let $n$ be an integer quote .	MathML/MathJax next to floating element or <blockquote> not rendered inline
T382196 Done	\overbrace x	$\overbrace{x}$ $\overbrace {x}$	\overbrace rendered below (not above) in MathML and client-side Mathjax
T382215 Done	a\ b \quad xy	$abxy$ $a\ b\quad xy$	TeX macro "\ " not inserting space in MathML and client-side MathJax
T384794 Done	a' \operatorname{a}'	$a^{\prime }{\mathrm{a}}^{}$ $a'\operatorname {a} '$	Prime symbol after \operatorname not rendered as superscript
T386071 Done	_12	${}_{1}2$ $_{1}2$	<math>_1</math> not rendered as subscript
T386318 Done	\sin \cos^2	$\sin {\cos }^2$ $\sin \cos ^{2}$	<math>\sin \cos^2</math> not rendered as superscript
T386585 Done T391889 dup	\textrm{foobar}	$\text{foobar}$ ${\textrm {foobar}}$	<math>\textrm{foobar}</math> results in "Math input error" with MathJax
T386787 Done	\begin{bmatrix} 1 & 0 \\ \end{bmatrix}	$\left[\begin{array}{cc}1& 0\end{array}\right]$ ${\begin{bmatrix}1&0\\\end{bmatrix}}$	Trailing linebreak via `\\` in <math> matrix should be ignored
T387249 Done	\hat{}	$\hat{}$ ${\hat {}}$	<math>\hat{}</math> generates invalid MathML
T387952 Done	{_{1}^2}	${}_1^2$ ${_{1}^{2}}$	<math>{_{1}^2}</math> not rendered as subscript
T389154 open	\max_{D} \min_{A} \mathbb{E}	$\underset{D}{\max }\underset{A}{\min }𝔼$ $\max _{D}\min _{A}\mathbb {E}$	Not enough space around min and max in native MathML mode
T390259 reopened	\mathbf{\Lambda}	$𝜦$ $\mathbf {\Lambda }$	<math>\mathbf{\Lambda}</math> not bold
	1\textbf{1}1 A\textbf{B}C	$1\mathbf{\text{𝟏}}1A\mathbf{\text{𝐁}}C$ $1{\textbf {1}}1A{\textbf {B}}C$	Also impacts numbers
T395489 open	\xleftarrow{n+\mu-1} B \xrightarrow[T]{n\pm i-1} C	$\stackrel{n+\mu -1}{\leftarrow }B\underset{T}{\overset{n\pm i-1}{\to }}C$ $\xleftarrow {n+\mu -1} B{\xrightarrow[{T}]{n\pm i-1}}C$	Unreadable rendering of \xleftarrow with text in MathML mode
T397120 Done	\textbf{1}	$\mathbf{\text{1}}$ ${\textbf {1}}$	\textbf{1} renders incorrectly in MathML and client-side MathJax modes
T401623 open	0.99	$0.99$ $0.99$	Bad kerning of decimal separator in MathML
T401718 open	\textstyle\sum_{i=0}^r \binom{m}{i}	${\sum }_{i=0}^r(\genfrac{}{}{0ex}{}{m}{i})$ $\textstyle \sum _{i=0}^{r}{\binom {m}{i}}$	\textstyle not applied to \binom in MathML
T401740 open	\left\{ a \Bigg\vert \int \right\}	$\left\{a\right|\int \}$ $\left\{a{\Bigg \vert }\int \right\}$	\Bigg\vert is not big in MathML
T401746 open	x := 1	$x:=1$ $x:=1$	Bad spacing of <math>x := 1</math> in MathML
T401849 open	\mathrm{d}x	$\mathrm{d}x$ $\mathrm {d} x$	Too much space in <math>\mathrm{d}x</math> with MathML