On dually flat general $(\alpha,\beta)$-metrics

Changtao Yu

In this work, the dual flatness, which is connected with Statistics and Information geometry, of general $(\alpha,\beta)$-metrics (a new class of Finsler metrics) is studied. A nice characterization for such metrics to be dually flat under some suitable conditions is provided and all the solutions are completely determined. By using an original kind of metrical deformations, many non-trivial explicit examples are constructed. Moreover, the relationship of dual flatness and projective flatness of such metrics is shown.

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