Geodesic
Functions on Linear Spaces Associated with Finite Projective Planes
Algebra i logika, Tome 41 (2002) no. 1, pp. 83-103.

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Using spread sets that define finite translation planes, we construct functions that map a finite linear space into itself. Properties of such functions, which are of interest from the standpoint of cryptography, are examined. We look into the relationship between these functions and corresponding translation planes.
Keywords: linear space over a finite field, spread set of linear transformations, function on a linear space. 
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N. D. Podufalov. Functions on Linear Spaces Associated with Finite Projective Planes. Algebra i logika, Tome 41 (2002) no. 1, pp. 83-103. http://geodesic.mathdoc.fr/item/AL_2002_41_1_a4/

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