Document 730

Numbering multiline equations with numbers and letters

Version: 3.5x, 4.x, 5.x - Scientific WorkPlace & Scientific Word

When you typeset in SWP and SW, you can number an entire multiline display with a single number and add a letter to each subequation to indicate its sequence in the display, as in 1a, 1b, 1c.... The sequence can be interrupted by text.

Using the Display Properties dialog

  1. Select the display and choose Properties.

  2. Choose Advanced.

  3. Select Enable Subequation Numbering.

  4. To continue the lettering sequence from the previous display, check Subequation Continuation.

  5. For each line of the display that you want to letter, select the line number and choose Auto.

  6. Choose OK.

Using subequation environments

  1. Select the equation and choose Properties.

  2. Check the Auto numbering option for each line of the equation for which you want a number to appear.

  3. In the Display Properties dialog, choose Advanced.

  4. If you are using a Key for Whole Display, delete it.

  5. Uncheck Enable Subequation Numbering and choose OK.

  6. Place the insertion point immediately before the display and enter an encapsulated TeX field.

  7. In the entry area, type \begin{subequations} and choose OK.

  8. If you are using a Key for Whole Display, from the Insert menu, choose Marker and enter the key that was deleted in step 4 above, then choose OK.

  9. Place the insertion point immediately after the last line in the display and enter another encapsulated TeX field.

  10. In the entry area, type \end{subequations} and choose OK.

See also

Added 07/07/06