2-56-11. William Thomson to H. Poincaré

June 30, 1894¹¹ 1 This letter was penned by a copyist.

34, Hans Place S.W.

Dear Mr. Poincaré,

I ought long ago to have thanked you for your kind letter of the 28^th May. The promised second volume of your “Méthodes Nouvelles” came to Glasgow during my absence and has been forwarded to me here.²² 2 Poincaré 1893.

I am very much pleased to have it and I find in it exactly what I wanted in regard to the equation

\frac{d^{2}u}{dx^{2}}=\Pi(x)u.

I have to thank you also for your beautiful volume “Les Oscillations Electriques” which I have also received here and which I find full of most interesting matter.³³ 3 Poincaré 1894.

Believe me, Yours very truly,

Kelvin

ALS 3p. Private collection, Paris 75017.

Time-stamp: "23.09.2014 00:39"

References

H. Poincaré (1893) Les méthodes nouvelles de la mécanique céleste, Volume 2. Gauthier-Villars, Paris. External Links: Link Cited by: footnote 2.
H. Poincaré (1894) Les oscillations électriques. Carré et Naud, Paris. External Links: Link Cited by: footnote 3.