2016-03-18 16:31 GMT+01:00 John Kitchin : > Try adding this to the top: > > #+HTML_HEAD: > Dear John (cc. the org-mode list) Thanks to your help I have succeeded in finding the right configuration for html export : #+HTML_HEAD: it works perfectly for the export of formulas. I have used the documentation on mathjax.org I hope that this cc. will be maybe useful for others. Best wishes Jo.