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April 1, 2015

April 1, 2015

Posted by **luckybee** on Thursday, April 4, 2013 at 9:08pm.

{-1, 0, 1}

- closure propery -
**Knights**, Thursday, April 4, 2013 at 9:13pmClosed under multiplication means that any member of the set times any other member of the set (including itself) yields another member of the set.

We have the combinations,

-1 * 0 = 0

-1 * 1 = -1

-1*-1 = 1

0*0 = 0

0*1 = 0

1*1 = 1

All results are from the set, so it indeed is closed.

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