Abstract.
A classification is given of all spreads in PG(3, q), q = pr, p odd, whose associated translation planes admit linear collineation groups of order q(q +1) such that a Sylow p-subgroup fixes a line and acts non-trivially on it.
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The authors are indebted to T. Penttila for pointing out the special examples of conical flock translation planes of order q2 that admit groups of order q(q+1), when q = 23 or 47.
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Jha, V., Johnson, N.L. The classification of spreads in PG(3, q) admitting linear groups of order q(q+1), I. odd order. J. geom. 81, 46–80 (2004). https://doi.org/10.1007/s00022-004-1759-0
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DOI: https://doi.org/10.1007/s00022-004-1759-0