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- Alf Aure, Wolfram Decker, Klaus Hulek, Sorin C. Popescu, Kristian Ranestad
- 1996

0. Introduction 1. The Heisenberg group of level 5 2. Surfaces and syzygies 3. The minimal abelian and bielliptic surfaces 4. Moore matrices 5. Modules obtained by concatenating three Moore matrices 6. Syzygy construction of bielliptic surfaces 7. Non-minimal abelian surfaces obtained via linkage 8. A new family of non-minimal abelian surfaces 9.… (More)

- Hirotachi Abo, Wolfram Decker, Nobuo Sasakura
- 1998

and β = ( e0 ∧ e2 + e1 ∧ e3 −e4 ) , where e0, . . . , e4 is a basis of the underlying vector space V of P . In particular, G is uniquely determined up to isomorphisms and coordinate transformations. (ii) Conversely, if G is the cohomology bunndle of the monad (M) as in (i), then G(1) is globally generated. Therefore the dependancy locus of four general… (More)

- Wolfram Decker, Frank-Olaf Schreyer
- J. Symb. Comput.
- 2000

- Janko Böhm, Wolfram Decker, Santiago Laplagne, Gerhard Pfister, Andreas Steenpaß, Stefan Steidel
- J. Symb. Comput.
- 2013

Article history: Received 14 October 2011 Accepted 23 March 2012 Available online 4 July 2012

- Wolfram Decker, George E. Sanborn, Matt Ridley, William H Annesley, E M Sorr
- Ophthalmology
- 1983

Retinal pigment epithelial tears have been recognized recently as a complication of retinal pigment epithelial detachments. They are characterized by sudden separation of detached from attached pigment epithelium at the margin of the detachment. Retraction of the overlying pigment epithelium occurs and exposes Bruch's membrane and choroid. Most pigment… (More)

In this chapter we explain constructive methods for computing the cohomol-ogy of a sheaf on a projective variety. We also give a construction for the Beilinson monad, a tool for studying the sheaf from partial knowledge of its cohomology. Finally, we give some examples illustrating the use of the Beilinson monad.

- ALF AURE, Wolfram Decker, KLAUS HULEK, Sorin C. Popescu, Kristian Ranestad
- 1993

In 1988 Serrano [Ser], using Reider’s method, discovered a minimal bielliptic surface in P. Actually he showed that there is a unique family of such surfaces and that they have degree 10 and sectional genus 6. It is easy to see that the only other smooth surfaces with these invariants are minimal abelian. There is a unique family of minimal abelian surfaces… (More)

- Janko Böhm, Wolfram Decker, Claus Fieker, Gerhard Pfister
- Math. Comput.
- 2015

A standard method for finding a rational number from its values modulo a collection of primes is to determine its value modulo the product of the primes via Chinese remaindering, and then use Farey sequences for rational reconstruction. Successively enlarging the set of primes if needed, this method is guaranteed to work if we restrict ourselves to “good”… (More)

- Daniel J. Bates, Wolfram Decker, +5 authors Charles W. Wampler
- Applied Mathematics and Computation
- 2014

Systems of polynomial equations arise throughout mathematics, engineering, and the sciences. It is therefore a fundamental problem both in mathematics and in application areas to find the solution sets of polynomial systems. The focus of this paper is to compare two fundamentally different approaches to computing and representing the solutions of polynomial… (More)