{% include "_includes/facebook_like.html" %} {% include "_includes/google_plus_one.html" %} {% include "_includes/twitter_sharing.html" %} {% if site.mathjax %} {% endif %} {% if site.google_analytics_tracking_id %} {% endif %} {% if site.clicky_tracking_id %} {% endif %} {% if site.woopra_tracking_site %} {% endif %}