Summary. The inverse Stefan problem can be understood as a problem of nonlinear approximation theory which we solved numerically by a generalized Gauss-Newton method introduced by Osborne and Watson [193. Under some assumptions on the parameter space we prove its quadratic convergence and demonstrate its high efficiency by three numerical examples.
Ausgehend vom verschiedenen Verhalten des 4‐Nitro‐pyazols und des 4‐Nitro‐3.5‐dimethyl‐pyrazols bei der Stannitreduktion, werden einige Versuche zum Verlauf der alkalischen Reduktion der Nitrogruppe in der Pyrazolreihe mitgeteilt. – Azopyrazole sind auf diese Weise nicht zu erhalten, können aber durch Kondensation von Amino‐ und Nitrosopyrazolen zugänglich gemacht werden.
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