 These postulates are closely related to the supplementary postulates for contraction. Let \(*\) be the partial meet revision defined from the partial meet contraction \(\div\) via the Levi identity. Then \(*\) satisfies superexpansion if and only if \(\div\) satisfies conjunctive overlap. Furthermore, \(*\) satisfies subexpansion if and only if \(\div\) satisfies conjunctive inclusion.