Mathematics – Combinatorics
Scientific paper
2004-07-08
Mathematics
Combinatorics
25 pages
Scientific paper
For a permutation f of an n-dimensional vector space V over a finite field of order q we let k-affinity(f) denote the number of k-flats X of V such that f(X) is also a k-flat. By k-spectrum(n,q) we mean the set of integers k-affinity(f) where f runs through all permutations of V. The problem of the complete determination of k-spectrum(n,q) seems very difficult except for small or special values of the parameters. However, we are able to establish that k-spectrum(n,q) contains 0 in the following cases: (i) q>2 and 0
Clark Edwin W.
Hou Xiang-dong
Mihailovs Alec
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