Difference between revisions of "Multiset"
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For example, <math>\{1, 1, 2, 3\} \neq \{1, 2, 3\}</math> as multisets. | For example, <math>\{1, 1, 2, 3\} \neq \{1, 2, 3\}</math> as multisets. | ||
| − | Note that the order of the elements is unimportant, so <math> | + | Note that the order of the elements is unimportant, so <math>\{1, 1, 2, 3\}= \{3, 1, 2, 1\}</math>. |
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| + | [[Category:Definition]] | ||
Latest revision as of 10:55, 26 June 2013
A multiset is a slight generalization of the notion of a set. A set is defined by whether or not each object is an element. A multiset is defined not just by its elements, but also by how many times each element is contained. In other words, a multiset is a set where duplication of elements is allowed.
For example, 
as multisets.
Note that the order of the elements is unimportant, so 
.
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