The following files contain pairs of projective planes of order 16 sharing a maximal (52,4)-arc.

  • The Johnson plane and the Johnson-Walker plane
  • The Johnson plane and the plane BBH1
  • The Lorimer-Rahilly plane LMRH and its dual plane

    The following files contain new maximal (52,4)-arcs found
    by Mustafa Gezek in the Johnson plane and the Mathon plane.

  • New arcs in the Johnson plane
  • New arcs in the Mathon plane

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