Apologies if this is a duplicate; I've found some similar questions but nothing that exactly addresses my problem.

I'd like to rename alternate chapter headings in my book-class LaTeX document. I'm aware of using \renewcommand to achieve this for every chapter heading, but can this be modified to only rename alternate chapters?


for i in [Chapter 1, Chapter 3, Chapter 5, ...]:
  • You could use the \titleformat command from the package titlesec and use a conditional for odd chapter numbers. Commented Dec 19, 2017 at 22:31

1 Answer 1


You can add a test to \chaptername itself:

\addto\captionsenglish{\renewcommand\chaptername{\ifodd\value{chapter}Lecture\else Something else\fi}}
\chapter{A} \chapter{B} \chapter{C}

This naturally assume that you are not using the command in some other place where the test it not suited.


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