Equation References
Equation references connect explanatory prose to specific mathematical displays. The document’s style determines forms such as “Equation 3” or “Eq. (3),” while cross-reference fields can keep the underlying identifier synchronized.
Refer to a numbered equation using its stable equation identifier, and use the document’s cross-reference mechanism when available so references can track renumbering.
Key details
Important caveats
Style Boundary
Abbreviations, parentheses and capitalization around equation references vary by journal and house style; keep the stable identifier separate from those presentation choices.
Further guidance
Identifier
Use the equation’s assigned number or label consistently in the text; do not manually invent a number that differs from the displayed equation identifier.
Practical Application
Refer to a numbered equation by its stable identifier and use cross-reference fields/links when the document system supports them. Follow the publication’s capitalization and parenthesis style consistently.
Reader Check
Could the equation number change during editing, and can the reference be linked to the managed equation number?
Stability
Where the authoring system supports cross-references to equation captions or labels, use that mechanism to reduce stale references after editing.
Worked Example
Use a live reference such as “see Equation (7)” so inserting an earlier equation updates the reference automatically instead of leaving a stale typed number.
Sources and evidence
Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.
- Create a cross-reference — Microsoft Support (opens in a new tab)Microsoft Support · Cross-references to headings, figures and other items; dynamic field/hyperlink behavior
- Add, format, or delete captions in Word — Microsoft Support (opens in a new tab)Microsoft Support · Numbered caption labels for figures, tables and equations and sequence updating