How to Reset Theorem Numbering at Each Subsubsection in LyX?

[HJ Farnsworth]

Greetings,

I am using LyX. When I type

\@addtoreset{thm}{section},

in the preamble, the theorem numbering is reset at each section, as desired. Similarly, when I type

\@addtoreset{thm}{subsection},

in the preamble, the theorem numbering is reset at each subsection, as desired. However, when I type

\@addtoreset{thm}{subsubsection},

in the preamble, the command is ignored entirely. Does anyone know how to get it working, i.e., how to get the theorem numbering reset at each subsubsection?

Thanks very much for any help that you can give.

-HJ Farnsworth

 

[AlephZero]

Are your subsubsections actually numbered in your document?

The \@addtoreset command doesn't do its thing when a \section command, etc is executed. It does its thing when the counter named "section" is incremented, inside the \section command. That only happens if the section is numbered.

If you make an unnumbered section with

\section*{the heading}

that will not reset the thm counter either.

By default, everything down to \subsection is numbered but \subsubsection (and lower levels) are not. You can change that be setting the counter secnumdepth. The default value is 2, so

\setcounter{secnumdepth}{3}

in your preamble will give you subsubsection numbers.

 

[HJ Farnsworth]

Hi, thanks for the response AlephZero.

So I just tried the secnumdepth thing you suggested, but it didn't work. The subsubsections are already numbered in the document, with or without secnumdepth. However, what I need is for the theorem counter to reset each time a new subsubsection is started. \@addtoreset does this correctly for anything higher than a subsubsection, but doesn't work for a subsubsection.

Does anyone know how to get \@addtoreset working for things lower than subsection?

Thanks again.

 

[AlephZero]

Can you attach the .tex code for a complete (short) document that doesn't work?

The fact that

The subsubsections are already numbered in the document, with or without secnumdepth.

is probably sigmificant, but playing 20 questions to guess why it's significant is probably not a good way to debug the problem.

 

[alphy]

Hello HJ Farnsworth,

Thank you for sharing your experience with using the \@addtoreset command in LyX. It is a useful tool for resetting numbering in different sections of a document. However, it is important to note that there may be limitations to its functionality, as you have experienced.

One possible limitation could be the structure of your document. The \@addtoreset command may not work if there are conflicts with other numbering systems or if the subsubsection level is not recognized by LyX. It may also depend on the specific settings and packages you are using in your document.

I would suggest checking the LyX documentation or reaching out to their support team for more specific guidance on how to get the \@addtoreset command working for subsubsections in your document. Alternatively, you could try using a different command or approach for resetting theorem numbering in subsubsections.

I hope this helps and good luck with your work in LyX!

Best,