Comparison morphisms between two projective resolutions of monomial algebras
- Autores
- Redondo, Maria Julia; Roman, Lucrecia Juliana
- Año de publicación
- 2017
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We construct comparison morphisms between two well-known projective resolutions of a monomial algebra A : the bar resolution Bar A and Bardzell’s resolution Ap A ; the first one is used to define the cup product and the Lie bracket on the Hochschild cohomology HH ∗ ( A ) and the second one has been shown to be an efficient tool for computation of these cohomology groups. The constructed comparison morphisms allow us to show that the cup product restricted to even degrees of the Hochschild cohomology has a very simple description. Moreover, for A = k Q/I a monomial algebra such that dim k e i Ae j = 1 whenever there exists an arrow α : i → j ∈ Q 1 , we describe the Lie action of the Lie algebra HH 1 ( A ) on HH ∗ ( A ).
Fil: Redondo, Maria Julia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Matemática Bahía Blanca. Universidad Nacional del Sur. Departamento de Matemática. Instituto de Matemática Bahía Blanca; Argentina
Fil: Roman, Lucrecia Juliana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Matemática Bahía Blanca. Universidad Nacional del Sur. Departamento de Matemática. Instituto de Matemática Bahía Blanca; Argentina - Materia
-
ALGEBRA
COHOMOLOGY
MORPHISMS
COMPARISON - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/64674
Ver los metadatos del registro completo
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Comparison morphisms between two projective resolutions of monomial algebrasRedondo, Maria JuliaRoman, Lucrecia JulianaALGEBRACOHOMOLOGYMORPHISMSCOMPARISONhttps://purl.org/becyt/ford/1.1https://purl.org/becyt/ford/1We construct comparison morphisms between two well-known projective resolutions of a monomial algebra A : the bar resolution Bar A and Bardzell’s resolution Ap A ; the first one is used to define the cup product and the Lie bracket on the Hochschild cohomology HH ∗ ( A ) and the second one has been shown to be an efficient tool for computation of these cohomology groups. The constructed comparison morphisms allow us to show that the cup product restricted to even degrees of the Hochschild cohomology has a very simple description. Moreover, for A = k Q/I a monomial algebra such that dim k e i Ae j = 1 whenever there exists an arrow α : i → j ∈ Q 1 , we describe the Lie action of the Lie algebra HH 1 ( A ) on HH ∗ ( A ).Fil: Redondo, Maria Julia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Matemática Bahía Blanca. Universidad Nacional del Sur. Departamento de Matemática. Instituto de Matemática Bahía Blanca; ArgentinaFil: Roman, Lucrecia Juliana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Matemática Bahía Blanca. Universidad Nacional del Sur. Departamento de Matemática. Instituto de Matemática Bahía Blanca; ArgentinaUnión Matemática Argentina2017-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/64674Redondo, Maria Julia; Roman, Lucrecia Juliana; Comparison morphisms between two projective resolutions of monomial algebras; Unión Matemática Argentina; Revista de la Unión Matemática Argentina; 59; 1; 7-2017; 1-310041-69321669-9637CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://inmabb.criba.edu.ar/revuma/pdf/v59n1/v59n1a01.pdfinfo:eu-repo/semantics/altIdentifier/arxiv/https://arxiv.org/abs/1612.02308info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:35:38Zoai:ri.conicet.gov.ar:11336/64674instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:35:38.302CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Comparison morphisms between two projective resolutions of monomial algebras |
title |
Comparison morphisms between two projective resolutions of monomial algebras |
spellingShingle |
Comparison morphisms between two projective resolutions of monomial algebras Redondo, Maria Julia ALGEBRA COHOMOLOGY MORPHISMS COMPARISON |
title_short |
Comparison morphisms between two projective resolutions of monomial algebras |
title_full |
Comparison morphisms between two projective resolutions of monomial algebras |
title_fullStr |
Comparison morphisms between two projective resolutions of monomial algebras |
title_full_unstemmed |
Comparison morphisms between two projective resolutions of monomial algebras |
title_sort |
Comparison morphisms between two projective resolutions of monomial algebras |
dc.creator.none.fl_str_mv |
Redondo, Maria Julia Roman, Lucrecia Juliana |
author |
Redondo, Maria Julia |
author_facet |
Redondo, Maria Julia Roman, Lucrecia Juliana |
author_role |
author |
author2 |
Roman, Lucrecia Juliana |
author2_role |
author |
dc.subject.none.fl_str_mv |
ALGEBRA COHOMOLOGY MORPHISMS COMPARISON |
topic |
ALGEBRA COHOMOLOGY MORPHISMS COMPARISON |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.1 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
We construct comparison morphisms between two well-known projective resolutions of a monomial algebra A : the bar resolution Bar A and Bardzell’s resolution Ap A ; the first one is used to define the cup product and the Lie bracket on the Hochschild cohomology HH ∗ ( A ) and the second one has been shown to be an efficient tool for computation of these cohomology groups. The constructed comparison morphisms allow us to show that the cup product restricted to even degrees of the Hochschild cohomology has a very simple description. Moreover, for A = k Q/I a monomial algebra such that dim k e i Ae j = 1 whenever there exists an arrow α : i → j ∈ Q 1 , we describe the Lie action of the Lie algebra HH 1 ( A ) on HH ∗ ( A ). Fil: Redondo, Maria Julia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Matemática Bahía Blanca. Universidad Nacional del Sur. Departamento de Matemática. Instituto de Matemática Bahía Blanca; Argentina Fil: Roman, Lucrecia Juliana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Matemática Bahía Blanca. Universidad Nacional del Sur. Departamento de Matemática. Instituto de Matemática Bahía Blanca; Argentina |
description |
We construct comparison morphisms between two well-known projective resolutions of a monomial algebra A : the bar resolution Bar A and Bardzell’s resolution Ap A ; the first one is used to define the cup product and the Lie bracket on the Hochschild cohomology HH ∗ ( A ) and the second one has been shown to be an efficient tool for computation of these cohomology groups. The constructed comparison morphisms allow us to show that the cup product restricted to even degrees of the Hochschild cohomology has a very simple description. Moreover, for A = k Q/I a monomial algebra such that dim k e i Ae j = 1 whenever there exists an arrow α : i → j ∈ Q 1 , we describe the Lie action of the Lie algebra HH 1 ( A ) on HH ∗ ( A ). |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-07 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/64674 Redondo, Maria Julia; Roman, Lucrecia Juliana; Comparison morphisms between two projective resolutions of monomial algebras; Unión Matemática Argentina; Revista de la Unión Matemática Argentina; 59; 1; 7-2017; 1-31 0041-6932 1669-9637 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/64674 |
identifier_str_mv |
Redondo, Maria Julia; Roman, Lucrecia Juliana; Comparison morphisms between two projective resolutions of monomial algebras; Unión Matemática Argentina; Revista de la Unión Matemática Argentina; 59; 1; 7-2017; 1-31 0041-6932 1669-9637 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/http://inmabb.criba.edu.ar/revuma/pdf/v59n1/v59n1a01.pdf info:eu-repo/semantics/altIdentifier/arxiv/https://arxiv.org/abs/1612.02308 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Unión Matemática Argentina |
publisher.none.fl_str_mv |
Unión Matemática Argentina |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) |
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CONICET Digital (CONICET) |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
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dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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