Sur un algorithme en volumes finis non structurés pour la simulation des flammes turbulentes en chimie infiniment rapide
Some results regarding an equation of Hamilton-Jacobi type
The main goal is to show that the pointwise Osserman four-dimensional pseudo-Riemannian manifolds (Lorentzian and manifolds of neutral signature ) can be characterized as self dual (or anti-self dual) Einstein manifolds. Also, examples of pointwise Osserman manifolds which are not Osserman are discussed.
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