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For a given matrix A we compute the matrix exponential e tA under the assumption that the eigen-values of A are known, but without determining the eigenvectors. The presented approach exploits the connection between matrix exponentials and confluent Vandermonde matrices V. This approach and the resulting methods are very simple and can be regarded as an… (More)

- U. Luther
- Adv. Comput. Math.
- 2004

- U. LUTHER
- 2002

We study the Cauchy singular integral operator SwI on (−1, 1), where |w| is a generalized Jacobi weight. This operator is considered in pairs of weighted spaces of continuous functions, where the weights u and v are generalized Jacobi weights with nonnegative exponents such that |w| = u/v. We introduce a certain polynomial approximation space which is well… (More)

- A. M. Chaker, B. Al-Kadah, U. Luther, U. Neumann, M. Wagenmann
- Clinical and translational allergy
- 2015

BACKGROUND
The number of injections in the dose escalation of subcutaneous immunotherapy (SCIT) is small for some currently used hypoallergenic allergoids, but can still be inconvenient to patients and can impair compliance. The aim of this trial was to compare safety and tolerability of an accelerated to the conventional dose escalation scheme of a grass… (More)

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