The difference between them is that permutations is concerned with the order of things to be arranged where as combinations don’t. Permutation: The number combination of a brief case.

Permutations deal with arrangements, and combinations deal with selections. Understanding the difference between the two is crucial. Formulas and Notations ...

In a sense this measures the isolation of permutation polynomials of the same degree over large finite prime fields. This monthly journal, begun in 1950, is devoted entirely to research in pure and ...