Riemannsche Arealstrukturen und multiquadratische Formen |
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Authors: | Siegfried Steiner |
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Institution: | (1) Mathematisches Institut, Universität Stuttgart, Pfaffenwaldring 57, D-7000 Stuttgart 80 |
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Abstract: | It is well known (and rather trivial to prove) that the square F2 of a Finsler norm F:TM![rarr](/content/vm53402g34j30p23/xxlarge8594.gif) on a differentiable manifold M is differentiable at the zero section if and only if F is the norm function of a Riemannian metric. However, the corresponding question for a general p-areal on M is far less trivial to settle and leads to interesting algebraic and combinatorial problems concerning multiquadratic forms. For p=2, the results are closely related to known properties of the curvature tensor of a Riemannian metric. |
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