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.
- dectab: Align columns on a decimal point
- labelschanged: Identify labels which cause endless “may have changed” warnings
- autonum: Automatic equation references
- fancyref: A LaTeX package for fancy cross-referencing