PermutationNoun Pronunciation The permutation means the action of rearrangement of the elements for another in a set. More formally: The permutation π in Sn is defined as a bijection from a set Sn onto itself. All permutations of a set with n elements create a symmetric group Sn, where the group operation is function composition. It holds four group axioms for two permutations π and σ in Sn: closure, identity, invertibility, and associativity. The composition of two permutations is not commutative.
The permutation stands for a number of combinations when the order does not matter following this formula:
Examples
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PivotNoun, (verb - see below)
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polynomialn. and adj. Pronunciation /ˌpɒlɪˈnəʊmɪəl/ Meaning Originally: an expression consisting of many terms, a multinomial. Now: spec. a sum of one or more terms each consisting of a constant multiplied by one or more variables raised to a positive (or non-negative) integral power (e.g. x4 − 3x2y + 7). Etymology Origin: Formed within English, by compounding. Etymons: poly-, -nomial OED |
Prime (number)noun Pronunciation: Meaning: a positive integer greater than 1 which can be divided without a remainder only by numbers 1 and itself Source: https://www.oed.com/view/Entry/266923#eid71284393
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projectionnoun Pronunciation: /prəˈdʒekʃ(ə)n/ Definition: The linear operation, which two-times implicated gives the same result as identical operation is called projection. Sorce: |