
doi: 10.1007/bf00181622
We develop a structure theory for near polygons with quads. Main results are the existence of sub 2j-gons for 2jd and the nonexistence of regular sporadic 2d-gons for d4 with s>1 and t 2>1 and t 3t 2(t 2+1).
regular near polygon, thick, quad, near polygon, Combinatorial aspects of finite geometries, dual polar spaces, Other designs, configurations, Other finite incidence structures (geometric aspects)
regular near polygon, thick, quad, near polygon, Combinatorial aspects of finite geometries, dual polar spaces, Other designs, configurations, Other finite incidence structures (geometric aspects)
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