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Faculty

  • Alexander Kovacec

    kovacec@mat.uc.pt

  • Research Area

    Interests in: Systems of polynomial equations, Polynomial Inequalities, Real Algebra, Matrix Theory,

  • Institution

    University of Coimbra

  • PhD

    Institution: University of Vienna, Austria
    Year: 1980

  • Main research publications

    • Young type inequalities and their Matrix Analogues (with Horst Alzer and Carlos Martins da Fonseca) ", Linear and Multilinear Algebra (2014)
    • A bound for the largest eigenvalue of a symmetric nonnegative matrix with zero diagonal (with Jorma K. Merikoski) , The Natália Bebiano Birthday volume: Textos de Matemática, Volume 44 , DMUC (C. Fonseca, S. Furtado, A. Kovacec, C. K. Li, editors), 2013
      ISBN: 9789728564483
    • A note on extrema of linear combinations of elementary symmetric functions (with Salma Kuhlmann, Cordian Riener) ", Linear and Multilinear Algebra 60 (2012)
    • Positive semidefinite diagonal minus tail forms are sums of squares (with Carla Fidalgo) ", Mathematische Zeitschrift 269 (2011)
    • The Hankel pencil conjecture (with Maria Celeste Gouveia) ", Linear Algebra Appl. 431 (2009)
  • PhD Students

    • Sums of Squares of Polynomials with emphasis on Diagonal minus Tail Forms 2010
    • co-supervision with Ana Cristina Almeida, ongoing
  • Adittional information

    Member of Projecto Delfos (school for young mathematicians/problem solving)

    Reviewer of Zentralblatt fuer Mathematik (since~1992;~80reviews)

    Spends also considerable energies for   refereeing of articles. 

Research and Events

Events

  • PhD Defense
    Fernando Lucatelli Nunes - Pseudomonads and Descent
    10:00 - Sala dos Capelos, Univ. Coimbra
    January 24, 2018
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Defended Theses

  • Descent theory of (T,V)-categories: global-descent and étale-descent
      Pier Giorgio Basile (September 2017)
      Maria Manuel Clementino
  • Representations of generalized quivers
      Artur Duarte Ferreira de Araújo (June 2017)
      Peter Gothen
  • On semisimple Hopf actions
      Deividi Ricardo Pansera (June 2017)
      Christian Edgar Lomp
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