Metric Inequality, Subdifferential Calculus and Applications

In this paper we establish characterizations of Asplund spaces in terms of conditions ensuring the metric inequality and intersection formulae. Then we establish chain rules for the limiting Fréchet subdifferentials. Necessary conditions for constrained optimization problems with non-Lipschitz data are derived.     

Micromagnetic and microcrystalline structure of ultrathin Co layers on W single crystal surfaces

The magnetic domain structure and the microcrystalline structure of ultrathin Co layers on W(1 1 0), W(1 0 0) and W(1 1 1) surfaces are studied with low energy electron microscopy with and without spin-polarization with the goal to shed some light on the importance of the various parameters which determine the micromagnetic structure.     

Comments on current aspects of chemical kinetics

An aged kineticist was awakened in 1989 from a 50-year slumber. After arduous study he sized-up the present situation, with occasional reflections on the state of knowledge in 1939.     

Scindements de Heegaard et groupe des homéotopies des petites variétés de Seifert

Sans résuméOblatum 12-XI-1990     

Why legendre made a wrong guess about <Emphasis Type="Bold">π</Emphasis>-(<Emphasis Type="Italic">x</Emphasis>), and how laguerre’s continued fraction for the logarithmic integral improved it

Carl Friedrich Gauβ, in 1792, when he was 15, found by numerical evidence that π(x), the number of primes p such that p ≤ x, goes roughly with x/in x (letter to Encke, 1849). This was, as can be seen from Table 1, a very weak approximation with an error of about 10%. In 1798 and again in 1808,     

Editorial: Molecular Magnets

Monatshefte für Chemie - Chemical Monthly -     

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