seceqn – Number theorems by section
The package formats equation numbers with a section number prefix, with the number itself reset for each section.
Label and References
Maybe you are interested in the following packages as well.
- lablst-pkg: List names of labels in a document
- dmhgener: Equation, figure (etc.) numbering and referencing
- labelschanged: Identify labels which cause endless “may have changed” warnings
- pagereference: Labels and references in Plain TeX