How to Use Nitrax Mathematical Keyboard with LibreOffice Writer

Write “Choose an angle θ between 0 and π” without searching a character menu for each Greek letter. Nitrax Mathematical Keyboard is a compact physical computer keyboard with mathematical, Greek and scientific symbols printed on its keys. After setup, key combinations type symbols from its blue and gray printed layers into your document.

In LibreOffice Writer, use ordinary text for symbols inside sentences. Use a Formula Object when the expression needs a mathematical layout.

From the printed key to your Writer paragraph

Complete the Windows setup or macOS setup, then enable Math Mode, the setting that activates symbol combinations.

Click in an ordinary Writer paragraph and type your words.
Find the required symbol printed on a key and use its combination.
Release the modifier keys and continue the sentence.

Windows combinations

Left Ctrl + Left Alt + printed key → Blue symbol

Add Shift → Gray symbol

Use left-side Ctrl and Alt. Right Alt/AltGr keeps its normal role.

Nitrax Mathematical Keyboard with monitor showing equations and math writing made easy

An exercise sheet written as ordinary text

Angles and comparisons

Choose an angle θ between 0 and π.

Compare the lengths: a ≤ b.

Explain the approximate equality: a ≈ b.

Illustrative document excerpt. Words and symbols share the paragraph.

Select and format these lines as text. Writer also offers Insert > Special Character for occasional characters; printed key combinations help when symbol entry repeatedly interrupts your writing. See the Writer text guide.

Text or Formula Object?

Your expression	Use
θ in a sentence; a ≤ b	Writer paragraph
Units m² or H₂O	Writer text with superscript/subscript formatting
Stacked fraction	Math Formula Object
Matrix or structured limits	Math Formula Object

m2 → m²: select the 2, then choose Format > Character > Position > Superscript. Choose Subscript for H₂O. These are text formatting, without a Formula Object.

Choose Insert > OLE Object > Formula Object, or Insert > Formula Object in the tabbed interface.

INPUT · Math Commands window

a over b

OUTPUT · Stacked fraction

\frac{a}{b}

LibreOffice Math interprets formula commands to create the layout.

The keyboard enters characters; it does not format complete equations or calculate answers. A slash typed in a paragraph stays a slash. See Formula Object help and Math syntax examples.

Three quick checks

Symptom	Check
Letter or menu instead of symbol	App running, Math Mode on, correct left-side Windows modifiers.
Box instead of symbol	Try a font containing that character.
Unexpected Formula Object result	Use Math syntax; compare character entry in a paragraph.

Symbol and font support vary. Check your required characters before finishing a handout or report.

Nitrax Mathematical Keyboard showing mathematical symbols printed on its keys

Keep your Writer explanations on one keyboard

For Writer notes, lessons and exercise sheets, keep words and printed math symbols on one physical keyboard. Choose Nitrax Mathematical Keyboard for everyday symbol entry, with LibreOffice Math handling structured equations.

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Published by the maker of Nitrax Mathematical Keyboard.