Numbering Equations

Apache OpenOffice 4.1 Math Guide

Math Guide

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• What is Math?
  • Getting Started
• Entering a Formula
  • The Elements Window
    • Example 1: $5\times 4$
  • Right-click (Context) Menu
  • Markup
  • Greek Characters
    • Example 2: $\pi \simeq 3.14159$
• Customizations
  • Formula Editor as a Floating Window
  • How Can I Make a Formula Bigger?
• Formula Layout
  • Brackets are Your Friends
  • Equations Over More Than One Line
  • How Do I Add Limits to My Sum/Integral?
  • Brackets with Matrices Look Ugly!
  • How Do I Make a Derivative?
  • How Do I Align My Equations at the Equals Sign?
• Numbering Equations
• Math Commands – Reference
  • Unary and Binary Operators
  • Relational Operators
  • Set Operations
  • Functions
  • Operators
  • Attributes
  • Miscellaneous
  • Brackets
  • Formats
  • Characters – Greek
  • Characters – Special

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Numbering Equations

Equation numbering is one of AOO Math’s best hidden features. The steps are simple, but not necessarily intuitive:

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

The fn is replaced by a numbered formula:

$E={\mathit {mc}}^{2}$	(2)

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

$\zeta \left(z\right)=\sum _{n=1}^{\infty }{\frac {1}{{n}^{z}}}$	(3)

You can reference an equation (for example, “as shown in Equation (2)”) with these steps:

1. Choose Insert → Cross-reference from the menu bar.
2. On the Cross-references tab (Figure 17), under Type, select Text.
3. Under Selection, select the equation number.
4. Under Format, select Reference.

Click  Insert .

Done! If you 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 parentheses around it, choose Numbering instead of Reference under Format.

Figure 17. Inserting a cross-reference to an equation number