@article{Fack2006EnumerationOT, title={Enumeration of the doubles of the projective plane of order 4}, author={Veerle Fack and Svetlana Topalova and Joost Winne and Rosen Zlatarski}, journal={Discrete Mathematics}, year={2006}, volume={306}, pages={2141-2151} }

- Published 2006 in Discrete Mathematics
DOI:10.1016/j.disc.2006.05.007

A classification of the doubles of the projective plane of order 4 with respect to the order of the automorphism group is presented and it is established that, up to isomorphism, there are 1 746 461 307 doubles. We start with the designs possessing non-trivial automorphisms. Since the designs with automorphisms of odd prime orders have been constructed… CONTINUE READING

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