All Stories

  1. On the operator equations An = A*A

    Article • Linear and Multilinear Algebra, July 2019, Taylor & Francis

    Dr Zsigmond Tarcsay

  2. ON THE ORDER STRUCTURE OF REPRESENTABLE FUNCTIONALS

    Article • Glasgow Mathematical Journal, September 2017, Cambridge University Press

    Dr Zsigmond Tarcsay, Tamás Titkos

  3. Characterizations of essentially self-adjoint and skew-adjoint operators

    Article • Studia Scientiarum Mathematicarum Hungarica, September 2015, Akademiai Kiado

    Dr Zsigmond Tarcsay

  4. LEBESGUE DECOMPOSITION FOR REPRESENTABLE FUNCTIONALS ON *-ALGEBRAS

    Article • Glasgow Mathematical Journal, July 2015, Cambridge University Press

    Dr Zsigmond Tarcsay

  5. On the parallel sum of positive operators, forms, and functionals

    Article • Acta Mathematica Hungarica, June 2015, Springer Science + Business Media

    Dr Zsigmond Tarcsay

  6. Extensions of positive operators and functionals

    Article • Linear Algebra and its Applications, May 2015, Elsevier

    Dr Zsigmond Tarcsay

  7. Radon–Nikodym Theorems for Nonnegative Forms, Measures and Representable Functionals

    Article • Complex Analysis and Operator Theory, December 2014, Springer Science + Business Media

    Dr Zsigmond Tarcsay

  8. A reversed von Neumann theorem

    Article • Acta Scientiarum Mathematicarum, January 2014, University of Szeged

    Dr Zsigmond Tarcsay

  9. Closed range positive operators on Banach spaces

    Article • Acta Mathematica Hungarica, December 2013, Springer Science + Business Media

    Dr Zsigmond Tarcsay

  10. Characterizations of selfadjoint operators

    Article • Studia Scientiarum Mathematicarum Hungarica, December 2013, Akademiai Kiado

    Dr Zsigmond Tarcsay

  11. On form sums of positive operators

    Article • Acta Mathematica Hungarica, January 2013, Springer Science + Business Media

    Dr Zsigmond Tarcsay

  12. Lebesgue-type decomposition of positive operators

    Article • Positivity, September 2012, Springer Science + Business Media

    Dr Zsigmond Tarcsay

  13. Operator extensions with closed range

    Article • Acta Mathematica Hungarica, December 2011, Springer Science + Business Media

    Dr Zsigmond Tarcsay

  14. T ∗ T always has a positive selfadjoint extension

    Article • Acta Mathematica Hungarica, August 2011, Springer Science + Business Media

    Dr Zsigmond Tarcsay

  15. Biorthogonal expansions for symmetrizable operators

    Article • Acta Mathematica Hungarica, January 2011, Springer Science + Business Media

    Dr Zsigmond Tarcsay