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Imaginaries in dense pairs of real-closed fields

ENGLISH ABSTRACT : Imaginaries are definable equivalence classes, which play an important role in model theory. In this thesis, we are interested in imaginaries of dense pairs of real-closed fields. More precisely, we consider the following problem: is acleq equal to dcleq in dense pairs of real-...

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Main Author: Rakotonarivo, Tsinjo Odilon
Other Authors: Boxall, Gareth John
Format: Thesis
Language:en_ZA
Published: Stellenbosch : Stellenbosch University 2017
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access_status_str Open Access
author Rakotonarivo, Tsinjo Odilon
author2 Boxall, Gareth John
author_browse Boxall, Gareth John
Rakotonarivo, Tsinjo Odilon
author_facet Boxall, Gareth John
Rakotonarivo, Tsinjo Odilon
author_sort Rakotonarivo, Tsinjo Odilon
collection Thesis
dc_rights_str_mv Stellenbosch University
description ENGLISH ABSTRACT : Imaginaries are definable equivalence classes, which play an important role in model theory. In this thesis, we are interested in imaginaries of dense pairs of real-closed fields. More precisely, we consider the following problem: is acleq equal to dcleq in dense pairs of real-closed fields? To answer this question, we first present some results about real-closed fields, which are basically completeness, quantifier elimination and elimination of imaginaries. Then, we concentrate on the completeness and near model-completeness for the theory of dense pairs of real-closed fields. And finally, we present the key point of the thesis. Namely, we demonstrate that acleq(∅) = dcleq(∅) but there exists A such that acleq(A) 6= dcleq(A)
format Thesis
id oai:scholar.sun.ac.za:10019.1/101187
institution Stellenbosch University (South Africa)
language en_ZA
last_indexed 2026-06-10T12:47:08.513Z
license_str Other — see source repository
provenance_str_mv Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository
publishDate 2017
publishDateRange 2017
publishDateSort 2017
publisher Stellenbosch : Stellenbosch University
publisherStr Stellenbosch : Stellenbosch University
record_format dspace
source_str SUNScholar — Stellenbosch University Repository
spelling oai:scholar.sun.ac.za:10019.1/101187 Imaginaries in dense pairs of real-closed fields Rakotonarivo, Tsinjo Odilon Boxall, Gareth John Stellenbosch University. Faculty of Science. Dept. of Mathematical Sciences Imaginaries (Mathematics) Dense pairs (Mathematics) Real-closed fields (Mathematics) Completeness (Mathematics) Quantifier elimination (Mathematics) UCTD Model theory (Mathematics) ENGLISH ABSTRACT : Imaginaries are definable equivalence classes, which play an important role in model theory. In this thesis, we are interested in imaginaries of dense pairs of real-closed fields. More precisely, we consider the following problem: is acleq equal to dcleq in dense pairs of real-closed fields? To answer this question, we first present some results about real-closed fields, which are basically completeness, quantifier elimination and elimination of imaginaries. Then, we concentrate on the completeness and near model-completeness for the theory of dense pairs of real-closed fields. And finally, we present the key point of the thesis. Namely, we demonstrate that acleq(∅) = dcleq(∅) but there exists A such that acleq(A) 6= dcleq(A) AFRIKAANSE OPSOMMING : Imaginêres is definiëerbare ekwivalensieklasse, wat ’n belangrike rol in modelteorie speel. In hierdie tesis stel ons belang in imaginêres in dig pare van reël-geslote liggame. Meer spesifiek beskou ons die volgende probleem: is acleq gelyk aan dcleq in dig pare van reël-geslote liggame? Om hierdie vraag te beantwoord, begin ons met ’n paar resultate oor reëlgeslote liggame, namelik volledigheid, kwantoreliminasie en eliminasie van imaginêres. Daarna behandel ons die volledigheid en byna-modelvolledigheid vir die teorie van dig pare van reël-geslote liggame. Uiteindelik behandel ons die hoofresultat van hierdie tesis, d.w.s. ons bewys dat acleq(∅) = dcleq(∅) maar dat daar A bestaan sodat acleq(A) 6= dcleq(A) 2017-02-20T18:54:01Z 2017-03-29T12:18:20Z 2017-02-20T18:54:01Z 2017-03-29T12:18:20Z 2017-03 Thesis http://hdl.handle.net/10019.1/101187 en_ZA Stellenbosch University vii, 40 pages application/pdf Stellenbosch : Stellenbosch University
spellingShingle Imaginaries (Mathematics)
Dense pairs (Mathematics)
Real-closed fields (Mathematics)
Completeness (Mathematics)
Quantifier elimination (Mathematics)
UCTD
Model theory (Mathematics)
Rakotonarivo, Tsinjo Odilon
Imaginaries in dense pairs of real-closed fields
title Imaginaries in dense pairs of real-closed fields
title_full Imaginaries in dense pairs of real-closed fields
title_fullStr Imaginaries in dense pairs of real-closed fields
title_full_unstemmed Imaginaries in dense pairs of real-closed fields
title_short Imaginaries in dense pairs of real-closed fields
title_sort imaginaries in dense pairs of real closed fields
topic Imaginaries (Mathematics)
Dense pairs (Mathematics)
Real-closed fields (Mathematics)
Completeness (Mathematics)
Quantifier elimination (Mathematics)
UCTD
Model theory (Mathematics)
url http://hdl.handle.net/10019.1/101187
work_keys_str_mv AT rakotonarivotsinjoodilon imaginariesindensepairsofrealclosedfields