unserver-unify/src/app/common/services/angularjs-mathjax-directive.js

angular.module('bamboo').
  directive('mathjax', function() {
    return function(scope, el, attrs, ctrl) {
      scope.$watch(attrs.mathjax, function() {
        MathJax.Hub.Queue(['Typeset', MathJax.Hub, el[0]]);
      });
    };
  });