TeX source:
I M T C=I W \times\left(\sum_{n=1}^{n} \sum_{T M=1}^{2} O O_{(a, b), T M, n}\right) \text { for } \mathrm{a}=1 \ldots \mathrm{A}, \mathrm{b}=1 \ldots \mathrm{B}