Typeset mathematical formulas in OneNote

Microsoft Office uses MS Equation 3.0 (MathType Equation Editor)

• The character · indicated to press [Space] and
• the character → indicated to press [Right].
• [Ctrl + Alt + 0] clears the formatting of the selection or current line.

Supported input languages

To typing equations in linear format use the following input language:

• UnicodeMath
• LaTeX
  • Symbol integration in all Office applications<>
  • Environments integration only supported in Word

Basics

Enter math mode by pressing

• [Alt + +] in OneNote for Windows 10 (UWP) or
• [Alt + =] in OneNote and other Office Suite applications.
• Example: [Alt + +] \iff· [Alt + +] renders as $⟺$

Evaluate a symbol (expression without parameters) by pressing

• [Space] once or by pressing
• \ to start a new expression.
• Example: \alpha\cdot\beta· renders as $\alpha \cdot \beta$

Enter a function (expression with parameters) by pressing

• [Space] once to enter the first parameter and pressing
• [Space] again to evaluate the function.
• Example: \sqrt·a+b·+c renders as $\sqrt{a+b}+c$

Leave math mode by

• pressing [Space] until all commands are evaluated and
• then close math mode by pressing
• [Alt + +] in OneNote for Windows 10 (UWP) or
• [Alt + =] in OneNote and other Office Suite applications.
• Example: [Alt + +] \sqrt·a+b·-c\cdot\alpha· [Alt + +] renders as $\sqrt{a+b}-c\cdot \alpha$

Number sets

Example input	Renders as
\doubleC	$\mathbb{C}$
\doubleN	$\mathbb{N}$
\doubleQ	$\mathbb{Q}$
\doubleR	$\mathbb{R}$
\doubleZ	$\mathbb{Z}$

Quotient

⟨dividend⟩/⟨divisor⟩

Example input	Renders as	Format
dx/a+b·	$\frac{dx}{a+b}$	UnicodeMath
y^2·/\partial·x·	$\frac{y^2}{\partial x}$	UnicodeMath
\frac{dx}{a+b}	$\frac{dx}{a+b}$	LaTeX

Integral

\int⟨interval⟩⟨integrand⟩ [⟨with respect to⟩]

• Press [Right] to leave the ⟨integrand⟩ as it opens a new scope
• Type \int·· for indefinite integral which skips the ⟨interval⟩

Example input	Renders as
\int·_a^b·f(x)·→dx	${\int }_a^{b}f(x)dx$
\int··f(x)·→dx	$\int f(x)dx$

Arrays and Matrices

\bmatrix(⟨entries⟩)

• & separates cells within a row
• @ starts a new row

Set the enclosing delimiter

• Github cannot yet display inline matrices correctly

Delimiter	Example input	Renders as
Plain	\matrix(1&2@a&b)·	$\begin{array}{cc}1& 2\\ a& b\end{array}$
Parentheses round brackets	\pmatrix(1&2@a&b)·	$\left(\begin{array}{cc}1& 2\\ a& b\end{array}\right)$
Brackets square brackets	\bmatrix(1&2@a&b)·	$\left[\begin{array}{cc}1& 2\\ a& b\end{array}\right]$
Braces curly brackets	\Bmatrix(1&2@a&b)·	$\left\{\begin{array}{cc}1& 2\\ a& b\end{array}\right\}$
Absolute Value pipes	\vmatrix(1&2@a&b)·	$\left|\begin{array}{cc}1& 2\\ a& b\end{array}\right|$
Norm double pipes	\Vmatrix(1&2@a&b)·	$\Vert \begin{array}{cc}1& 2\\ a& b\end{array}\Vert$
Custom Delimiter	\langle·\matrix(1&2@a&b)·|·	$⟨\begin{array}{cc}1& 2\\ a& b\end{array}\Vert$

Set the display style

Style	Example input	Renders as
typeset in paragraphs	\textstyle·a=1/2·	$a=\frac{1}{2}$
typeset on lines by themselves	\displaystyle·a=1/2·	$a=\frac{1}{2}$
subscripts or superscripts	\scriptstyle·a=1/2·	$a=\frac{1}{2}$
2nd-order subscripts or superscripts	\scriptscriptstyle·a=1/2·	$a=\frac{1}{2}$

Cases

• type \left·{\matrix(0&t>0@1&t=0)·\right·
• delete the \left character

Multiple equations

\eqarray(⟨equations⟩)

• & separates alignment columns
• @ starts a new line

\eqarray(x&=102@a+b&=x@3/x&=6-1)· renders as

$$\begin{array}{rl}x& =102\\ a+b& =x\\ \frac{3}{x}& =6-1\end{array}$$

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Sources:

• 2022-06-10: Using OneNote to Write Equations – Blake Margolis
• 2022-06-14: Keyboard shortcuts in OneNote
• 2022-07-04: Linear format equations using UnicodeMath and LaTeX in Word
• 2022-07-04: What’s the difference between the OneNote versions-

Related:
Math references - Typeset mathematical equations and expressions

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