# Post 2

This post has no date. Export this second post only by bringing point here and doing M-x org-hugo-export-wim-to-md. This is some text before the first heading of this post. sdkfjdkalsf dsafdsfdklsfl dsfas fasdfas fsdaf safkasjf asjfkasjf asfjlsakf asfsajf asf

LaTeX formatted equation: $$E = -J \sum_{i=1}^N s_i s_{i+1}$$ If $$a^2=b$$ and $$b=2$$, then the solution must be either $a=+\sqrt{2}$ or $a=-\sqrt{2}$ ox-hugo Issue #130 $$\label{eq:1} C = W\log_{2} (1+\mathrm{SNR})$$ Here we refer to equation \ref{eq:2}.