Bestimmung von Corticosteroiden im Blut durch Doppelmarkierung und Messung von 14C und 3H in der Gasphase

Ohne ZusammenfassungAuszug aus der Dissertation Reinhard Ködding, Technische Hochschule München 1961.     

The λ-complete multigraphs

Let E₁……E_m be the edges of a hypergraph. Assume each element in the union of the edges occurs in at least two of E₁……E_m. Assume further that every pair of distinct edges, E₁, and E₁, intersect in at most one element and that for each such pair there are exactly λ other edges E_k such that E₁ and E₁ both intersect E_k. We characterize the hypergraphs for which each |E₁| ≤ 2. These are the λ-complete multigraphs.     

Global stability of stationary solutions of reaction-diffusion systems

We give a condition which implies that the trivial solution, U ≡ 0, of a class of reaction-diffusion systems with homogeneous Dirichlet boundary conditions, is a global attractor for all nonnegative solutions. In certain cases, this condition, which relates the diffusion matrix and the domain to a parameter which depends on the nonlinear term, significantly improves similar conditions which can be obtained from energy estimates. Applications are given to equations arising in mathematical ecology.     

Reflected radical classes

Acta Mathematica Hungarica -