)         \over         \prod_{\alpha=0}^{k(\omega,G)}         0         \cosh\left(\pmb{h}(K_\alpha) \right)     }     \times     {\textstyle     \exp     \big( \beta      \sum_{i\in V} h_i      (\delta_{\sigma_i,0}-\delta_{\sigma_i,-0})     \big)