Relation table/Properties/2/Exercise

Determine whether the relation defined by the relation table

${}\,$	${}A$	${}B$	${}C$	${}D$
${}A$	${}\times$	${}\,$	${}\times$	${}\,$
${}B$	${}\times$	${}\times$	${}\,$	${}\,$
${}C$	${}\,$	${}\,$	${}\times$	${}\,$
${}D$	${}\,$	${}\times$	${}\,$	${}\times$

on the set ${}\{A,B,C,D\}$ is reflexive, symmetric, transitive, antisymmetric.

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