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?

i.e.

for i in [Chapter 1, Chapter 3, Chapter 5, ...]:
\renewcommand{\chaptername}{Lecture}

• You could use the \titleformat command from the package titlesec and use a conditional for odd chapter numbers. – Phelype Oleinik Dec 19 '17 at 22:31

\documentclass{book}