Tobias Huber

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We present the Mathematica package HypExp which allows to expand hypergeometric functions J FJ−1 around integer parameters to arbitrary order. At this, we apply two methods, the first one being based on an integral representation, the second one on the nested sums approach. The expansion works for both symbolic argument z and unit argument. We also(More)
Long-distance quantum communication is one of the prime goals in the field of quantum information science. With information encoded in the quantum state of photons, existing telecommunication fibre networks can be effectively used as a transport medium. To achieve this goal, a source of robust entangled single-photon pairs is required. Here we report the(More)
In this article, we describe a new algorithm for the expansion of hypergeometric functions about half-integer parameters. The implementation of this algorithm for certain classes of hypergeometric functions in the already existing Mathematica package HypExp is described. Examples of applications in Feynman diagrams with up to four loops are given. External(More)
Gastrointestinal stromal tumours (GISTs) are rarely found in the rectum. Large rectal GISTs in the narrow pelvis sometimes require extended abdominal surgery to obtain free resection margins, and it is a challenge to preserve sufficient anal sphincter and urogenital function. Here we present a 56-year-old male with a locally advanced juxta-anal(More)
Primary intestinal lymphangiectasia (PIL) is a rare disorder, especially in adults. It causes a local disruption of chylus transport and is part of the exudative gastroenteropathies. Conservative therapy includes dietary measures or somatostatin medication. Taking the differential diagnosis of PIL into consideration is a major challenge, since patients(More)
HISTORY After the initiation of skills-labs in Marburg and Goettingen the peer-teaching students of both institutions saw a need for communication and cooperation. The primary goal of these 'skills-lab workshops' was the exchange of already existing ideas for extracurricular peer-teaching, the development of new tutorials and long-term cooperation between(More)
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