Ruth Kellerhals [SEP] date of birth
Ruth Kellerhals
Ruth Kellerhals (born 17 July 1957) is a Swiss mathematician at the University of Fribourg, whose field of study is hyperbolic geometry, geometric group theory and polylogarithm identities.
Biography.
As a child, she went to a gymnasium in Basel and then studied at the University of Basel, graduating in 1982 with a diploma directed by Heinz Huber "On finiteness of the isometry group of a compact negatively curved Riemannian manifold". She received her PhD. in 1988, from the same university, with a
), Russian set theorist and geometric topologist
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