Titlebook: Algebraic and Complex Geometry; In Honour of Klaus H Anne Frühbis-Krüger,Remke Nanne Kloosterman,Matthi Conference proceedings 2014 Springe

Horizon

Caustics of Plane Curves, Their Birationality and Matrix Projections,rce point . in the plane. Then we prove more generally a theorem for curves . in the projective space of 3 × 3 symmetric matrices .. For a general 3 × 1 vector . the projection to the plane given by . → . is birational on ., unless . is not a line and . is contained in a plane of the form ..

否决

lipids

Delta Economics and Sustainability, methods involve different stability conditions. In dimension 2 we prove that there is a natural connection between them, related to a yet another stability condition, the linear stability. Finally we make some speculations and prove new results in higher dimension.

自爱

Delusions and Prediction Error, of . and irreducible components of the exceptional divisor in the minimal resolution of the quotient singularity .. Over non algebraically closed fields . there may exist representations irreducible over . which split over .. The same is true for irreducible components of the exceptional divisor. I

Accrue

伦理学

Mangle

https://doi.org/10.1057/9780230289758neral Kummer surface), the limits as . ∈ .. tends to 0 of the Severi varieties ..(..), parametrizing irreducible .-nodal plane sections of ... We give applications of this to (i) the counting of plane nodal curves through base points in special position, (ii) the irreducibility of Severi varieties o

Isthmus

Freeze

https://doi.org/10.1007/978-3-662-53666-7e. Let . be a nef line-bundle on ., such that the top power . vanishes and . is primitive. Assume that the two dimensional subspace ..(.) ..(.) of . intersects . trivially. We prove that the linear system of . is base point free and it induces a Lagrangian fibration on .. In particular, the line-bun

CURL

https://doi.org/10.1007/978-3-662-53666-7 bundle (this was known in the projective case even without assumption on the existence of vector fields). We further show that a global projective deformation of the projectivised tangent bundle over a projective space is again of this type unless it is the projectivisation of a special unstable bu