Self-dual, not self-polar (Q856849)
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scientific article; zbMATH DE number 5080048
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Self-dual, not self-polar |
scientific article; zbMATH DE number 5080048 |
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Self-dual, not self-polar (English)
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14 December 2006
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The authors provide an elementary proof of the statement that the smallest order of a self-dual and not self-polar incidence structure is 7. Up to isomorphism there are exactly eight incidence structures on seven points with this property. Larger examples of such incidence structures have been known before, but the proofs for those are much more complicated.
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incidence structure
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self-dual
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self-polar
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