Q.Write the dual of the following statement pattern: $[\sim (p \vee q)] \wedge [p \vee \sim (q \wedge \sim s)]$

In $[\sim(p\vee q)]\wedge[p\vee\sim(q\wedge\sim s)]$ there are four ∧/∨ occurrences: the outer $\wedge$, the $\vee$ inside the first bracket (under a $\sim$), the $\vee$ joining $p$ with the second bracket, and the $\wedge$ inside the second bracket (under a $\sim$). Every one of these is swapped, while all $\ …

With negated brackets, students sometimes mistakenly try to 'apply De Morgan's law' instead of simple duality — duality is a purely syntactic sw …