Question
Find a statement involving only $\wedge, \vee$ and $\neg$ (and $s$ and $t$ ) equivalent to $s \Leftrightarrow t$. Does your statement have as few symbols as possible? If you think it doesn't, try to find one with fewer symbols.
Step 1
The biconditional statement $s \Leftrightarrow t$ is true if both $s$ and $t$ are true, or both are false. In logical terms, $s \Leftrightarrow t$ is equivalent to $(s \wedge t) \vee (\neg s \wedge \neg t)$. Show more…
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