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New Uniform Subregular Parallelisms of PG(3, 4) Invariant under an Automorphism of Order 2
Abstract A spread in PG(n, q) is a set of lines which partition the point set. A parallelism is a partition of the set of lines by spreads. A parallelism is uniform if all its spreads are isomorphic. Up to isomorphism, there are three spreads of PG(3, 4) – regular, …