I don't know if it's correct to refer to this as summation notation since the operation is not addition so please correct me if that's inaccurate.
How do I expand this notation?
I believe it's 
for n=4, but don't wasn't sure how to automatically expand it. Is the idea that here that we are logically and'ing as i varies and or'ing as j varies?
Another similar example I'd like some elucidation on how to properly expand is 
I appreciate any help clarifying how to expand such notation.