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Roland Bacher
  • Member for 12 years, 7 months
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e-mail: roland.bacher@univ-grenoble-alpes.fr

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43
Can a discrete set of the plane of uniform density intersect all large triangles?
39
A limit involving binomial coefficients: $\lim_{n\to\infty} (-1)^n\sum_{k=1}^n(-1)^k{n\choose k}^{-1/k}=\frac12$?
39
A curious identity related to finite fields
37
An explicit example of a finitely presented group containing a subgroup isomorphic to $(\mathbb Q,+)$.
31
Which power series have bounded integral coefficients and have an inverse given by a series having bounded integral coefficients

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