Volume 19 Volume 19, Issue 4, 137–181 Volume 19, Issue 3, 95–135 Volume 19, Issue 2, 47–94 Volume 19, Issue 1, 1–46
Volume 17 Volume 17, Issue 3, 189–249 Volume 17, Issue 2, 77–188 Volume 17, Issue 1, 1-75
Switching techniques are developed that produce a variety of new parallelisms in PG(3,K), where K is a infinite field. When K is the field of real numbers, 2χ0mutually non-isomorphic parallelisms are constructed.
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