Abstract
The Desarguesian, Hall, and Hering translation planes of order q2 are characterized as exactly those translation planes of odd order with spreads in PG (3,q) that admit a linear collineation group with infinite orbits one of length q+1 and i of length (q-q) /i for i=1 or 2.
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Hiramine, Y., Jha, V. & Johnson, N.L. Characterization of Translation Planes by Orbit Lengths. Geometriae Dedicata 78, 69–80 (1999). https://doi.org/10.1023/A:1005226621288
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DOI: https://doi.org/10.1023/A:1005226621288