# How to force a desired numeration of equations in Book/Monograph StyleSheet?

I am writing a text in the MMA > Format > StyleSheet > Book > Monograph StyleSheet. I have a problem with the automatic numeration of "EquationNumbered" cells.

Namely, I have several "BookChapterTitle". These are numbered but not necessarily starting from one, and some chapter numbers may miss. For example I start with the chapter 4 as you see in the image below:

I would like to have (4.1) as the number of the formula. If this is not possible, I agree to have it as (1.1). It is, however, numbered as (0.1).

Any idea of how to control the figure in the first position and, generally, how to fix this?

• Can you put the notebook some place or include the notebook code in the question? – user21 Jul 29 '19 at 10:57
• @user21 I hope this can be open The file is entitled ""Semiconductors (after Neamen)" dropbox.com/l/scl/AAAPune3gBxsHzN5p6leZnhb3PrSxsSYd2g – Alexei Boulbitch Jul 29 '19 at 11:51
• I hope that I can share this file through the dropbox dropbox.com/l/scl/AAAPune3gBxsHzN5p6leZnhb3PrSxsSYd2g though they may ask to make an account. I am not sure. – Alexei Boulbitch Jul 29 '19 at 11:57
• Can we assume that chapter numbers are then assigned manually for each chapter? – Kuba Jul 29 '19 at 13:01
• @Kuba I also hypothesized this, but I do not know for sure. – Alexei Boulbitch Jul 29 '19 at 14:51