bibliography: Poincare and the convergence of certain formal series

From: 110 (madyan110_at_yahoo.co.uk)
Date: 08/20/04


Date: 19 Aug 2004 21:15:00 -0400


Hi all,
I read somewhere that Poincare proved the convergence of some formal
series when computing the normal forms (during his study of the three
body problem ?), and I was wondering if someone can give the exact
reference where he proved it, or a reference where we can find such
proofs.
thanks.



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