Now showing items 41-45 of 45

    • The line on moduli stacks of principal bundles on a curve 

      Hoffmann, Norbert; Biswas, Indranil (Documenta Mathematica, 2010)
      Let G be an affine reductive algebraic group over an algebraically closed field k. We determine the Picard group of the moduli stacks of principal G–bundles on any smooth projective curve over k.
    • Existence of twistor spaces of algebraic dimension two over the connected sum of four complex projective planes 

      Campana, Frederic; Kreussler, Bernd (American Mathematical Society, 1999)
      We prove the existence of twistor spaces of algebraic dimension two over the connected sum of four complex projective planes 4CP2. These are the rst examples of twistor spaces of algebraic dimension two over a ...
    • On a relative Fourier-Mukai transform on genus one fibrations 

      Burban, Igor; Kreussler, Bernd (Springer, 2006)
      We study relative Fourier-Mukai transforms on genus one fibrations with section, allowing explicitly the total space of the fibration to be singular and non-projective. Grothendieck duality is used to prove a ...
    • Derived categories of irreducible projective curves of arithmetic genus one 

      Burban, Igor; Kreussler, Bernd (Cambridge Journals, 2006)
      We investigate the bounded derived category of coherent sheaves on irreducible singular projective curves of arithmetic genus one. A description of the group of exact auto-equivalences and the set of all t-structures ...
    • Geometric view of measurement errors 

      O'Driscoll, Diarmuid; Ramirez, Donald E. (Taylor and Francis, 2011)
      The slope of the best fit line from minimizing the sum of the squared oblique errors is the root of a polynomial of degree four. This geometric view of measurement errors is used to give insight into the performance of ...