Nitrax Mathematical Keyboard vs Obsidian
Writing a waves note in Obsidian? Define wavelength with λ in the sentence, connect it to another note, then add a formatted equation where it helps the explanation.
Nitrax Mathematical Keyboard is a compact physical computer keyboard with mathematical, Greek and scientific symbols printed on its keys. After setup, key combinations enter symbols from the blue and gray printed layers. Keep your Obsidian notes; add a physical way to type their mathematical vocabulary.
One note, two ways to write math
Use direct characters for a definition or reminder. Use Obsidian’s math notation when an expression needs mathematical formatting.
Linked topic
See [[Waves]] for the full explanation.Ordinary text with a Greek letter
The wavelength λ is the distance between successive crests.
The λ character sits directly in the sentence.
Native inline math
$v = f\lambda$Obsidian uses MathJax to display this as a mathematical expression.
In its official documentation, Obsidian explains linked-note syntax and MathJax expressions. A single pair of dollar signs encloses inline math; double dollar signs enclose a separate math block.

Choose by what you write most often
| Your task | Useful approach |
|---|---|
| Greek letters and relations inside explanations | Nitrax Math Keyboard enters symbol characters through its printed keys. |
| Fractions, matrices or multi-line derivations | Write MathJax expressions in Obsidian using LaTeX notation. |
| Connecting a definition to another note | Use Obsidian’s internal links. |
| Writing the same symbols in other apps | The physical keyboard can also serve supported everyday text fields. |
The keyboard enters characters. Obsidian organizes the notes and renders supported math expressions; structured equations still need their notation.
Keep the note system you already use
If your notes mix explanations with recurring mathematical symbols, printed symbol keys give you a reference at your fingertips. On Nitrax Math Keyboard, λ is printed in gray on the L key; its key combination enters the character into your text.
Obsidian includes basic MathJax support without an additional plugin. Keep it for structured formulas and use the keyboard for the symbols in surrounding explanations.
Check the companion setup for your computer before buying. Symbol display depends on the application and font.
Put math symbols within reach of your notes
Choose Nitrax Mathematical Keyboard for the Greek letters and scientific symbols you keep adding to explanations. Keep Obsidian for the links and formulas that give those notes structure.
Buy nowPublished by the maker of Nitrax Mathematical Keyboard.