230 citations
- Centre National de la Recherche ScientifiqueFR10 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR7 papers
- Rutherford Appleton LaboratoryGB6 papers
- University of OxfordGB6 papers
- CEA Paris-SaclayFR5 papers
- University of LiverpoolGB5 papers
- Chemnitz University of TechnologyDE4 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di GenovaIT4 papers
- Stockholm UniversitySE4 papers
- Université Grenoble AlpesFR4 papers
- University of CambridgeGB4 papers
- University of OsloNO4 papers
6 papers · 1 filter
Campedelli surfaces with fundamental group of order 8
Margarida Mendes Lopes, Rita Pardini, Miles Reid
We prove that an etale cover Y of degree 8 of a Campedelli surface S is a complete intersection of four quadrics in P^6, obtaining as a consequence that Y is the universal cover of…
Mirror fibrations and root stacks of weighted projective spaces
Ignacio de Gregorio, Etienne Mann
We show that the orbifold Chow ring of a root stack over a well-formed weighted projective space can be naturally seen as the Jacobian algebra of a function on a singular variety g…
Remarks on Type III Unprojection
Stavros Argyrios Papadakis
Type III unprojection plays a very important role in the birational geometry of Fano threefolds. It was first introduced by A. Corti on his calculations of Fano threefolds of genus…
On the arithmetic of del Pezzo surfaces of degree 2
Andrew Kresch, Yuri Tschinkel
We study the arithmetic of certain del Pezzo surfaces of degree 2. We produce examples of Brauer-Manin obstruction to the Hasse principle, coming from 2- and 4-torsion elements in…
Tjurina and Milnor numbers of matrix singularities
Victor Goryunov, David Mond
In order to understand the deformations of determinants and Pfaffians resulting from deformations of matrices, we study the deformation theory of composites , with isolat…
Linear Systems of Plane Curves with a Composite Number of Base Points of Equal Multiplicity
A. Buckley, M. Zompatori
We extend the range of linear systems of plane curves for which it is known that the dimension is equal to the expected dimension. We use a degeneration technique due to C. Ciliber…