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Publikováno v:
Mathematische Zeitschrift (2023) 305:12
We generalize the celebrated results of Bernhard Riemann and Gaston Darboux: we give necessary and sufficient conditions for a bilinear form to be flat. More precisely, we give explicit necessary and sufficient conditions for a tensor field of type (
Externí odkaz:
http://arxiv.org/abs/2109.03098
