Could one convert a Double Infinite Product into a Double Infinite Series?

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Could one generalize converting an infinite product to an infinite sum for the case of double products and double series as seen in $(1.1)$ and if possible how would one prove this ?

$(1.0)$

$$\log \prod_n s_n = \sum_n \log s_n$$

$(1.1)$ $$\log \left(\prod_n \prod_m s_{mn}\right) = \sum_n \sum_m \log (s_{mn})$$