Work L

$\text{Boolean Functions on Two Variables}$
$\text{Boolean Function}$	$\text{Entitative Graph}$	$\text{Existential Graph}$
$f_{0}$
$\text{false}$	$\text{false}$	$\text{false}$
$f_{1}$
$\text{neither}~ x ~\text{nor}~ y$	$\lnot (x \lor y)$	$\lnot x \land \lnot y$
$f_{2}$
$y ~\text{and not}~ x$	$\lnot x \land y$	$\lnot x \land y$
$f_{3}$
$\text{not}~ x$	$\lnot x$	$\lnot x$
$f_{4}$
$x ~\text{and not}~ y$	$x \land \lnot y$	$x \land \lnot y$
$f_{5}$
$\text{not}~ y$	$\lnot y$	$\lnot y$
$f_{6}$
$x ~\text{not equal to}~ y$	$x \ne y$	$x \ne y$
$f_{7}$
$\text{not both}~ x ~\text{and}~ y$	$\lnot x \lor \lnot y$	$\lnot (x \land y)$
$f_{8}$
$x ~\text{and}~ y$	$x \land y$	$x \land y$
$f_{9}$
$x ~\text{equal to}~ y$	$x = y$	$x = y$
$f_{10}$
$y$	$y$	$y$
$f_{11}$
$\text{if}~ x ~\text{then}~ y$	$x \Rightarrow y$	$x \Rightarrow y$
$f_{12}$
$x$	$x$	$x$
$f_{13}$
$\text{if}~ y ~\text{then}~ x$	$x \Leftarrow y$	$x \Leftarrow y$
$f_{14}$
$x ~\text{or}~ y$	$x \lor y$	$x \lor y$
$f_{15}$
$\text{true}$	$\text{true}$	$\text{true}$