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Oct 24, 2016 at 12:53 comment added Venkataramana The following answer to a MO question also addresses this question. mathoverflow.net/q/3450
Nov 6, 2014 at 4:11 history edited Venkataramana CC BY-SA 3.0
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Nov 6, 2014 at 3:40 history edited Venkataramana CC BY-SA 3.0
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Nov 6, 2014 at 1:06 history edited Venkataramana CC BY-SA 3.0
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Nov 5, 2014 at 14:29 comment added user1073 I just thought that it was worth pointing out that number fields with the same Dedekind zeta functions are called "arithmetically equivalent" and were studied by Robert Perlis (sciencedirect.com/science/article/pii/0022314X77900701#) where he showed that they can only arise from the the group theoretic condition mentioned by Venkataramana. (Number theorists tend to call these groups "Gassmann equivalent", whereas Riemannian geometers call them "almost conjugate". They are closely related to the construction of isospectral non-isometric Riemannian manifolds.)
Nov 5, 2014 at 12:42 history edited Venkataramana CC BY-SA 3.0
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Nov 5, 2014 at 10:44 vote accept Daniel Loughran
Nov 5, 2014 at 10:35 history answered Venkataramana CC BY-SA 3.0