- #1

- 8

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## Homework Statement

Let

*B*be a non-empty set, and supose that {S

_{a}: a[tex]\in[/tex]

*B*} is an B- indexed family of subsets of a set S. Then we have,

([tex]\cup[/tex]

_{a\in B}S

_{a})

^{c}= [tex]\bigcap

_{a\in B}[/tex] S

_{a}

^{c}.

## Homework Equations

## The Attempt at a Solution

I tried to show that the two were both subsets of each other, but I'm not sure how to do that.