The elementary theory of free Steiner triple systems
Free Steiner triple systems (STSs) are infinite structures that are naturally characterised by a universal property. We consider the class of free STSs from a model-theoretic viewpoint. We show that free STSs on any number of generators are elementarily equivalent. We axiomatise their theory and sho...
| Autores: | , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2026 |
| País: | España |
| Institución: | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| Repositorio: | Recercat. Dipósit de la Recerca de Catalunya |
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| Acceso en línea: | https://hdl.handle.net/2445/228722 |
| Access Level: | acceso abierto |
| Palabra clave: | Combinatòria (Matemàtica) Teoria de models Lògica matemàtica Combinations Model theory Mathematical logic |
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The elementary theory of free Steiner triple systemsBarbina, SilviaCasanovas Ruiz-Fornells, EnriqueCombinatòria (Matemàtica)Teoria de modelsLògica matemàticaCombinationsModel theoryMathematical logicFree Steiner triple systems (STSs) are infinite structures that are naturally characterised by a universal property. We consider the class of free STSs from a model-theoretic viewpoint. We show that free STSs on any number of generators are elementarily equivalent. We axiomatise their theory and show that it is stable.Association for Symbolic Logic.2026202620262026info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion26 p.application/pdfhttps://hdl.handle.net/2445/228722https://hdl.handle.net/2445/228722Articles publicats en revistes (Matemàtiques i Informàtica)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: https://doi.org/10.1017/jsl.2026.10188Journal of Symbolic Logic, 2026https://doi.org/10.1017/jsl.2026.10188(c) Barbina, Silvia, et al., 2026info:eu-repo/semantics/openAccessoai:dnet:recercat____::befb71473238d25155eb210162be1c642026-05-29T05:05:01Z |
| dc.title.none.fl_str_mv |
The elementary theory of free Steiner triple systems |
| title |
The elementary theory of free Steiner triple systems |
| spellingShingle |
The elementary theory of free Steiner triple systems Barbina, Silvia Combinatòria (Matemàtica) Teoria de models Lògica matemàtica Combinations Model theory Mathematical logic |
| title_short |
The elementary theory of free Steiner triple systems |
| title_full |
The elementary theory of free Steiner triple systems |
| title_fullStr |
The elementary theory of free Steiner triple systems |
| title_full_unstemmed |
The elementary theory of free Steiner triple systems |
| title_sort |
The elementary theory of free Steiner triple systems |
| dc.creator.none.fl_str_mv |
Barbina, Silvia Casanovas Ruiz-Fornells, Enrique |
| author |
Barbina, Silvia |
| author_facet |
Barbina, Silvia Casanovas Ruiz-Fornells, Enrique |
| author_role |
author |
| author2 |
Casanovas Ruiz-Fornells, Enrique |
| author2_role |
author |
| dc.subject.none.fl_str_mv |
Combinatòria (Matemàtica) Teoria de models Lògica matemàtica Combinations Model theory Mathematical logic |
| topic |
Combinatòria (Matemàtica) Teoria de models Lògica matemàtica Combinations Model theory Mathematical logic |
| description |
Free Steiner triple systems (STSs) are infinite structures that are naturally characterised by a universal property. We consider the class of free STSs from a model-theoretic viewpoint. We show that free STSs on any number of generators are elementarily equivalent. We axiomatise their theory and show that it is stable. |
| publishDate |
2026 |
| dc.date.none.fl_str_mv |
2026 2026 2026 2026 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
| format |
article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
https://hdl.handle.net/2445/228722 https://hdl.handle.net/2445/228722 |
| url |
https://hdl.handle.net/2445/228722 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.relation.none.fl_str_mv |
Reproducció del document publicat a: https://doi.org/10.1017/jsl.2026.10188 Journal of Symbolic Logic, 2026 https://doi.org/10.1017/jsl.2026.10188 |
| dc.rights.none.fl_str_mv |
(c) Barbina, Silvia, et al., 2026 info:eu-repo/semantics/openAccess |
| rights_invalid_str_mv |
(c) Barbina, Silvia, et al., 2026 |
| eu_rights_str_mv |
openAccess |
| dc.format.none.fl_str_mv |
26 p. application/pdf |
| dc.publisher.none.fl_str_mv |
Association for Symbolic Logic. |
| publisher.none.fl_str_mv |
Association for Symbolic Logic. |
| dc.source.none.fl_str_mv |
Articles publicats en revistes (Matemàtiques i Informàtica) reponame:Recercat. Dipósit de la Recerca de Catalunya instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
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Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
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Recercat. Dipósit de la Recerca de Catalunya |
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Recercat. Dipósit de la Recerca de Catalunya |
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15,811543 |