Abstract
An automorphism group of a nontrivial (possibly infinite) Steiner triple system has at least as many block-orbits as point-orbits. The proof is a translation of that in the finite case, with a small twist. For block size 4, the argument fails, and, indeed, the stronger statement (involving block-tactical decompositions) is false.
Original language | English |
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Pages (from-to) | 97-100 |
Number of pages | 4 |
Journal | Discrete Mathematics |
Volume | 125 |
Issue number | 1-3 |
DOIs | |
Publication status | Published - 15 Feb 1994 |