Numbering equations

Getting Started with OpenOffice.org 3.x

Chapter 9: Getting Started with Math

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• Entering a formula
• Customizations
• Formula layout
• Numbering equations

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Equation numbering is one of OOo Math's best hidden features. The steps are simple, but obscure:

1. Start a new line.
2. Type “fn" and then press F3.

The “fn" is replaced by a numbered formula:

Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle E=mc^2}                      (2)

Now you can double-click on the formula to edit it. For example, here is the Riemann Zeta function:

Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \zeta (z) = \sum_{n=1}^\infin \frac{1}{n^z}}                      (3)

You can reference an equation (“as shown in Equation (2)") with these steps:

1. Choose Insert > Cross-reference from the menu bar.
2. On the Cross-references tab, under Type, select Text.
3. Under Selection, select the equation number.
4. Under Format, select Reference.
5. Click Insert.

Done! If you later add more equations to the paper before the referenced equation, all the equations will automatically renumber and the cross-references will update.

To insert the equation number without parenthesis around it, choose Numbering under Format instead of Reference.