{% if page:lang %} {% else %} {% endif %} {% if page:title %} {{ page:title }} {% else %} {{ site:title }} {% endif %} {% if page.math %} {% endif %}

{% assign homelink = site:header-homelink-fr %} {% assign title = site:header-title-fr %} {% assign subtitle = site:header-subtitle-fr %} {% if page:lang == 'en' %} {% assign homelink = site:header-homelink-en %} {% assign title = site:header-title-en %} {% assign subtitle = site:header-subtitle-en %} {% endif %}