Trombetti, Marco
(2017)
Countable and Uncountable in Group Theory.
[Tesi di dottorato]
| Tipologia del documento: |
Tesi di dottorato
|
| Lingua: |
English |
| Titolo: |
Countable and Uncountable in Group Theory |
| Autori: |
| Autore | Email |
|---|
| Trombetti, Marco | marco.trombetti@unina.it |
|
| Data: |
4 Aprile 2017 |
| Numero di pagine: |
116 |
| Istituzione: |
Università degli Studi di Napoli Federico II |
| Dipartimento: |
Matematica e Applicazioni "Renato Caccioppoli" |
| Scuola di dottorato: |
Scienze matematiche ed informatiche |
| Dottorato: |
Scienze matematiche e informatiche |
| Ciclo di dottorato: |
29 |
| Coordinatore del Corso di dottorato: |
| nome | email |
|---|
| de Giovanni, Francesco | degiovan@unina.it |
|
| Tutor: |
| nome | email |
|---|
| de Giovanni, Francesco | [non definito] |
|
| Data: |
4 Aprile 2017 |
| Numero di pagine: |
116 |
| Parole chiave: |
countable group; uncountable group; countably recognizable property; large group; group theory; infinite group theory; |
| Settori scientifico-disciplinari del MIUR: |
Area 01 - Scienze matematiche e informatiche > MAT/02 - Algebra |
[error in script]
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| Depositato il: |
20 Apr 2017 09:40 |
| Ultima modifica: |
14 Mar 2018 11:24 |
| URI: |
http://www.fedoa.unina.it/id/eprint/11504 |
| DOI: |
10.6093/UNINA/FEDOA/11504 |
Abstract
A prominent, recurring feature of group theory has been the determination of groups (all of) whose subgroups possess some group theoretical property. For infinite groups in a suitable universe a number of different approaches have been used in this regard. For locally finite groups, for example, knowledge of the structure of the finite subgroups is often crucial. On the other hand the concept of "largeness" has also recently played an interesting role. Moving from this, I started to study how subgroups of uncountable cardinality affect an uncountable group. Let X be a group theoretical proper, let G be a group of uncountable cardinality and suppose that all its proper uncountable subgroups satisfy X. Is it true that all (proper) subgroups of G satisfy X? The thesis exploits this question, showing that, under some soluble conditions, the answer is often positive. Finally the thesis deals with countably recognizable properties, which has a strong relation with the previous question.
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