A set of integers is naturally written from smallest to largest; a set of letters is written in lexicographic order | The order is often implicitly understood |
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When the term combination is used to refer to either situation as in care must be taken to clarify whether sets or multisets are being discussed | Permutation groups and combinatorial structures |
"A compact representation of permutation groups" | Due to the likely possibility of confusion, cycle notation is not used in conjunction with one-line notation sequences for permutations |
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