Now showing items 1-20 of 38

    • A note on a conjecture of Xiao 

      Barja Yáñez, Miguel Ángel; Zucconi, Franco (1998)
      Article
      Open Access
    • A note on a question of Fujita and a conjecture of Xiao 

      Barja Yáñez, Miguel Ángel (1998)
      Article
      Open Access
    • ÀLGEBRA MULTILINEAL i GEOMETRIA 

      Barja Yáñez, Miguel Ángel (Universitat Politècnica de Catalunya, 2017-11-09)
      Exam
      Restricted access to the UPC academic community
    • ÀLGEBRA MULTILINEAL i GEOMETRIA 

      Barja Yáñez, Miguel Ángel (Universitat Politècnica de Catalunya, 2017-07-06)
      Exam
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    • ÀLGEBRA MULTILINEAL i GEOMETRIA 

      Barja Yáñez, Miguel Ángel (Universitat Politècnica de Catalunya, 2017-01-10)
      Exam
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    • ÀLGEBRA MULTILINEAL i GEOMETRIA 

      Barja Yáñez, Miguel Ángel (Universitat Politècnica de Catalunya, 2018-01-12)
      Exam
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    • ÀLGEBRA MULTILINEAL I GEOMETRIA | Final 

      Barja Yáñez, Miguel Ángel (Universitat Politècnica de Catalunya, 2020-01-17)
      Exam
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    • Experiència pràctica de comunicació de Matemàtiques a la ciutadania i a secundària – 2a fase 

      Alberich Carramiñana, Maria; Barja Yáñez, Miguel Ángel; Borràs Sol, Júlia; Plans Berenguer, Bernat; Quer Bosor, Jordi; Thomas, Federico; Torras, Carme; Xambó Descamps, Sebastián (Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2013-02-08)
      Conference report / Conference lecture
      Restricted access - author's decision
      El projecte implementa experiències pràctiques dels estudis universitaris de matemàtiques (grau, llicenciatura i màsters) en l'àmbit de la docència i la divulgació científica. La finalitat divulgativa pretén fomentar ...
    • Extension of maps defined on many fibres 

      Barja Yáñez, Miguel Ángel; Naranjo, J. C. (1997)
      Article
      Open Access
      Let S be a fibred surface. We prove that the existence of morphisms from non countably many fibres to curves implies, up to base change, the existence of a rational map from S to another surface fibred over the same base ...
    • Generalized Clifford-Severi inequality and the volume of irregular varieties 

      Barja Yáñez, Miguel Ángel (2015-02-15)
      Article
      Open Access
      We give a sharp lower bound for the self-intersection of a nef line bundle L on an irregular variety X in terms of its continuous global sections and the Albanese dimension of X, which we call the generalized Clifford-Severi ...
    • Generalized Clifford-Severi inequality and the volume of irregular varieties 

      Barja Yáñez, Miguel Ángel (2013-03-02)
      External research report
      Restricted access - author's decision
      We give a sharp lower bound for the selfintersection of a nef li ne bundle L on an irregular variety X in terms of its continuous global sections and the Albanese dim ension of X, which we call the Generalized Clifford-Severi ...
    • GEOMETRIA AFÍ I EUCLIDIANA 

      Barja Yáñez, Miguel Ángel (Universitat Politècnica de Catalunya, 2012-03-20)
      Exam
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    • GEOMETRIA AFÍ I EUCLIDIANA 

      Barja Yáñez, Miguel Ángel (Universitat Politècnica de Catalunya, 2012-05-30)
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    • GEOMETRIA AFÍ I EUCLIDIANA 

      Barja Yáñez, Miguel Ángel (Universitat Politècnica de Catalunya, 2019-04-01)
      Exam
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    • GEOMETRIA AFÍ I EUCLIDIANA 

      Barja Yáñez, Miguel Ángel (Universitat Politècnica de Catalunya, 2012-06-27)
      Exam
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    • GEOMETRÍA AFÍ I EUCLIDIANA | EXTRAORDINARI 

      Barja Yáñez, Miguel Ángel (Universitat Politècnica de Catalunya, 2020-07-15)
      Exam
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    • GEOMETRÍA AFÍ I EUCLIDIANA | FINAL 

      Barja Yáñez, Miguel Ángel (Universitat Politècnica de Catalunya, 2020-06-19)
      Exam
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    • GEOMETRÍA AFÍ I EUCLIDIANA | PARCIAL 

      Barja Yáñez, Miguel Ángel (Universitat Politècnica de Catalunya, 2020-03-01)
      Exam
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    • Higher-dimensional Clifford-Severi equalities 

      Barja Yáñez, Miguel Ángel; Pardini, Rita; Stoppino, Lidia (2019-11-28)
      Article
      Restricted access - publisher's policy
      Abstract.LetXbe a smooth complex projective variety,a:X¿Aa mor-phism to an abelian variety such that Pic0(A) injects into Pic0(X) and letLbe a line bundle onX; denote byh0a(X,L) the minimum ofh0(X,L¿a*a) fora¿Pic0(A). The ...
    • Linear systems on irregular varieties 

      Barja Yáñez, Miguel Ángel; Pardini, Rita; Stoppino, Lidia (2019-01-01)
      Article
      Open Access