Set Union

The Disjoint Union Function

Available in Sets.xla, a Microsoft© Excel add-in.
Click "DisjointUnion",or scroll this page for DisjointUnion examples.
Click on another function in the browser window to read about it.
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Difference Right Associative Difference Disjoint Union Intersection MakeList MakeSet MatrixToList NMakeList PowerSet SymmetricDifference Union

The Disjoint Union Function

The DisjointUnion function returns a set.
The function can be called in one of two ways.
  1. From the function browser, above.
  2. Typing the function into directly into a cell.

Examples

In these examples, function outputs are colored red.
A3 = DisjointUnion(A1:A2)
  A
1 1,2,3
2 3,4,5
3 {(1,1),(2,1),(3,1),(3,2),(4,2),(5,2)}

Rules for Selections

Disjoint Union behaves basically the same way that Union behaves.
The only difference is that it marks each element at the shallowest
level of nesting so that it is discernible which set it came from.

Created on ... Jaunary 02, 2002