fix mathjax attempt 2
fix mathjax attempt 2

ncsu-geoforall-lab/tangible-landscape-talk,ncsu-geoforall-lab/tangible-landscape-talk,ncsu-osgeorel/lecture-slides-template,ncsu-osgeorel/lecture-slides-template,ncsu-osgeorel/lecture-slides-template,ncsu-geoforall-lab/tangible-landscape-talk,ncsu-geoforall-lab/tangible-landscape-talk,ncsu-osgeorel/lecture-slides-template