Power set: Difference between revisions

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@@ Line 39: / Line 39: @@
 report z_powerset.
-write `P(empty set) ->`.
+write `P({}) ->`.
 perform calculate_powerset using ``.
 new-line.
-write `P({ empty set }) ->`.
+write `P({ {} }) ->`.
 perform calculate_powerset using `{}`.
 new-line.
@@ Line 82: / Line 82: @@
 <pre>
-P(empty set) -> { {} }
+P({}) -> { {} }
-P({ empty set }) -> { {} {{}} }
+P({ {} }) -> { {} {{}} }
 P({ 1 2 3 4 }) -> { {} {1} {2} {12} {3} {13} {23} {123} {4} {14} {24} {124} {34} {134} {234} {1234} }
 </pre>