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For example, in the multiset {a, a, b, b, b, c} the multiplicities of the members a, b, and c are respectively 2, 3, and 1, and therefore the cardinality of this multiset is 6. Nicolaas Govert de Bruijn coined the word multiset in the 1970s, according to Donald Knuth.
Additionally, a family of sets may be defined as a function from a set , known as the index set, to , in which case the sets of the family are indexed by members of . [1] In some contexts, a family of sets may be allowed to contain repeated copies of any given member, [ 2 ] [ 3 ] [ 4 ] and in other contexts it may form a proper class .
The UCLA Language Materials Project (LMP) maintained a web resource about teaching materials for some 150 languages that are less commonly taught in the United States. The project, funded by the U.S. Department of Education, was created in 1992. It is part of the UCLA Center for World Languages.
It provides the unordered_multiset class for the unsorted multiset, as a kind of unordered associative container, which implements this multiset using a hash table. The unsorted multiset is standard as of C++11; previously SGI's STL provides the hash_multiset class, which was copied and eventually standardized.
The 3-partition problem remains NP-complete even when the integers in S are bounded above by a polynomial in n.In other words, the problem remains NP-complete even when representing the numbers in the input instance in unary. i.e., 3-partition is NP-complete in the strong sense or strongly NP-complete.
This list is limited to programs that teach four or more languages. There are many others that teach one language. Alphabetical lists of languages show the courses available to learn each language, at All Language Resources, Lang1234, Martindale's Language Center, Omniglot, and Rüdiger Köppe. (UCLA Language Materials Project has ended.)
In number theory and computer science, the partition problem, or number partitioning, [1] is the task of deciding whether a given multiset S of positive integers can be partitioned into two subsets S 1 and S 2 such that the sum of the numbers in S 1 equals the sum of the numbers in S 2.
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