It is known that the option
num:nil drops the numeration of sections (when exporting from
How could I include a unnumbered section among numbered ones in Org-mode?
You can turn off numbering for a section by adding the property :UNNUMBERED:. i.e.:
* Heading 1 * Heading 2, unnumbered :PROPERTIES: :UNNUMBERED: t :END: * Heading 3
[This is a dupe from the tex.stackexchange.com site: https://tex.stackexchange.com/a/224259/3197 ]