# Name of a set that allows repetition

If a set cannot contain repetition, what would be the proper term for a group of items that allowed repetition?

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– Martin Sleziak Oct 19 '12 at 14:02

## 1 Answer

Multisets are sets which allow repetitions, but the order does not matter.

If you wish to allow repetitions and the order does matter, you are looking for a sequence.

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Thank you for your help. – Larry B Oct 19 '12 at 14:01
Multisets are sometimes known as "bags". – Barry Fruitman Feb 24 '13 at 19:35
I never heard that terminology; but then again I haven't really worked with multisets. – Asaf Karagila Feb 24 '13 at 19:36