Category:Unions of Families

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This category contains results about Unions of Families.

Let $I$ be an indexing set.

Let $\family {S_i}_{i \mathop \in I}$ be a family of sets indexed by $I$.

Then the union of $\family {S_i}$ is defined as:

$\ds \bigcup_{i \mathop \in I} S_i := \set {x: \exists i \in I: x \in S_i}$

Pages in category "Unions of Families"

The following 3 pages are in this category, out of 3 total.