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Collection

In common usage, a collection is any group of items that has one or more properties in common. For example, paintings from the same artist, or coins from Germany before 1900, see collecting and collectible.

In mathematics, collection is another term for set, or sometimes for class.



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Grateful Dead

... referred to as "Bobby"), the youngest member of the group, played rhythm guitar. Pigpen played keyboards, harmonica and, was an inspirational vocalist until his death ...

 
 
 
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