Contents of Ulmer Seminare Volume 12, 2007

• W. Arendt and M. Chovanec:
  Dirichlet regularity and degenerate diffusion
• W. Arendt and R. Mazzeo:
  Spectral Properties of the Dirichlet-to-Neumann Operator on Lipschitz Domains
• W. Arendt and T. Regińska:
  An ill-posed boundary value problem for the Helmholtz equation on Lipschitz domain
• W. Arendt and A. Zamboni:
  Decomposing and twisting bisectorial operators
• W. Balser and C. Röscheisen:
  Solving the hypergeometric system in terms of one higher transcendental function
• C.J.K. Batty, R. Chill and S. Srivastava:
  Maximal regularity for second order non-autonomous Cauchy problems
• M. Biegert, M. Einemann and M. Kunze:
  Regular Form Perturbations
• M. Biegert and M. Warma:
  The heat equation with nonlinear generalized Robin boundary conditions
• M. Bohner, O Došlý and W. Kratz:
  Sturmian and spectral theory for discrete symplectic systems
• M. Chovanec:
  Ultracontractivity for degenerate diffusion
• J. Dittrich:
  On Boundary Value Problems for Surfaces of a Prescribed Line Element with positive Curvature
• J. Dittrich:
  Existence and Uniqueness Theorems for a Geometric Initial Value Problem
• M. Einemann:
  Semigroup Methods for the Black-Scholes Operator and the Invariance of Level Sets with Applications in Finance
• E. Fašangová and P. J. Miana:
  Hilbert, Dirichlet and Fejér families of operators arising from C_0-groups and cosine functions
• M. Haase:
  The group reduction for bounded cosine functions on UMD spaces
• S. Hofmann, M. Mitrea and S. Monniaux:
  L^p-bounds for the Riesz transforms associated to the Hodge Laplacian in Lipschitz domains
• J. Hu and M. Zähle:
  Generalized Bessel and Riesz potentials on metric measure spaces
• W. Kratz and M. Tentler:
  Recursion formulae for the characteristic polynomial of symmetric banded matrices
• M. Kunze:
  Very Weak Integration of Transition Semigroups
• E. Liflyand:
  Remarks on Hausdorff operators
• J.W. Neuberger:
  Potential Theory for Nonlinear Semigroups
• R. Nittka:
  Strong Approximation of the Robin-Laplacian Semigroup via the Gaussian Semigroup in Spaces of Continuous Functions
• R. Nittka and M. Sauter:
  Sobolev Gradients for Differential Algebraic Equations
• E.M. Ouhabaz:
  A spectral multiplier theorem for non-self-adjoint operators
• U. Stadtmüller and M. Thalmaier:
  Strong Laws for Delayed Sums of Random Fields