| http://www.w3.org/ns/prov#value | - 1 -1, ??2 -1, ??3 -1 . . . , ??N-1 -1, ??N -1 are N inverse permutations defined by the key, and W represents the number of possibilities for each inverse permutation defined by the key; and where ??(t) is a step function, and ??X (t), X={0, 1, 2, . . . , N-1, N}, decrements the sequence of ??X for each value of t except when t equals an integer multiple of R, where R is a prime number.
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