
doi: 10.37236/1790
A configuration $(p_q, n_k)$ is a collection of $p$ points and $n$ straight lines in the Euclidean plane so that every point has $q$ straight lines passing through it and every line has $k$ points lying on it. A configuration is astral if it has precisely $\lfloor {q+1\over2} \rfloor$ symmetry classes (transitivity classes) of lines and $\lfloor{k+1\over2} \rfloor$ symmetry classes of points. An even astral configuration is an astral configuration configuration where $q$ and $k$ are both even. This paper completes the classification of all even astral configurations.
Configuration theorems in linear incidence geometry, Arrangements of points, flats, hyperplanes (aspects of discrete geometry), Other designs, configurations
Configuration theorems in linear incidence geometry, Arrangements of points, flats, hyperplanes (aspects of discrete geometry), Other designs, configurations
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