Analog computers are systems that perform computations by manipulating physical quantities such as electrical current, that map math variables, instead of representing information using abstraction ...

This is a preview. Log in through your library . Abstract Let $S = \{x_1, x_2, \cdots, x_n \}$ be an $n$-set and let $S_1, S_2, \cdots, S_m$ be subsets of $S$. Let $A ...