The Tjurina number for Sebastiani-Thom type isolated hypersurface singularities
| dc.contributor.author | Almirón, Patricio | |
| dc.date.accessioned | 2023-06-17T08:28:00Z | |
| dc.date.available | 2023-06-17T08:28:00Z | |
| dc.date.issued | 2021 | |
| dc.description.abstract | In this note we provide a formula for the Tjurina number of a join of isolated hypersurface singularities in separated variables. From this we are able to provide a characterization of isolated hypersurface singularities whose difference between the Milnor and Tjurina numbers is less or equal than two arising as the join of isolated hypersurface singularities in separated variables. Also, we are able to provide new upper bounds for the quotient of Milnor and Tjurina numbers of certain join of isolated hypersurface singularities. Finally, we deduce an upper bound for the quotient of Milnor and Tjurina numbers in terms of the singularity index of any isolated hypersurface singularity, not necessarily a join of singularities. | |
| dc.description.department | Depto. de Álgebra, Geometría y Topología | |
| dc.description.faculty | Fac. de Ciencias Matemáticas | |
| dc.description.faculty | Instituto de Matemática Interdisciplinar (IMI) | |
| dc.description.refereed | FALSE | |
| dc.description.sponsorship | Ministerio de Ciencia e Innovación (MICINN) | |
| dc.description.status | unpub | |
| dc.eprint.id | https://eprints.ucm.es/id/eprint/72795 | |
| dc.identifier.uri | https://hdl.handle.net/20.500.14352/7205 | |
| dc.language.iso | eng | |
| dc.relation.projectID | MTM2016-76868-C2-1-P; PID2020-114750GB-C32 | |
| dc.rights.accessRights | open access | |
| dc.subject.cdu | 517.554 | |
| dc.subject.keyword | Singularities of curves | |
| dc.subject.keyword | Singularities of surfaces | |
| dc.subject.keyword | Local complex singularities | |
| dc.subject.keyword | Hypersurface singularities | |
| dc.subject.ucm | Funciones (Matemáticas) | |
| dc.subject.ucm | Geometria algebraica | |
| dc.subject.unesco | 1202 Análisis y Análisis Funcional | |
| dc.subject.unesco | 1201.01 Geometría Algebraica | |
| dc.title | The Tjurina number for Sebastiani-Thom type isolated hypersurface singularities | |
| dc.type | journal article | |
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| dspace.entity.type | Publication |
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