On 11/15/2016 09:43 AM, Bernt Lie wrote: > > I use LyX 2.2.1 (currently) on Windows 10. > > > > I have a rather long document (some 600 pages, with 9 chapters + > several appendices), and want to number Exercises, Problems, Examples, > Theorems, etc. **independently** and numbered **by the chapter** (or > appendix) they appear in. Thus, exercises in chapter 6 should be > numbered Exercise 6.1, Exercise 6.2, etc., while examples in chapter 6 > should be numbered Example 6.1, Example 6.2, etc. > > > > Currently, this doesn’t work. My set-up is: > > · Document class: Book (Standard Class) > > · Modules: Theorems (AMS, Numbered by Type) > > > > What else do I need to set? >

I assume the problem is that you are not getting the "numbered by chapter" bit? If so, then maybe the easiest thing to do is use the internal LaTeX command \@addtoreset in the preamble, thus: \@addtoreset{theorem}{chapter} Now the theorem counter gets reset whenever the chapter counter is reset. You'll need to do the same thing for any other counters you are using, and see the theorems-ams-bytype.inc file for the names of the various counters. See also: http://www.tex.ac.uk/FAQ-addtoreset.html. Richard