Talk:Liénard equation

Who was Liénard ?
Notable omission from the main article is a biographical reference to the person behind this eponymously named theorem. DFH 20:41, 21 November 2006 (UTC)


 * The PlanetMath template or external link appears broken...Nimur 15:51, 1 May 2007 (UTC)
 * Fixed, the template requires a urlname attribute. Nimur 15:53, 1 May 2007 (UTC)

Untrue
One sentence makes the claim:

"The Van der Pol equation has no exact, analytic solution."

No doubt whoever wrote this meant something like that the solution of the Van der Pol equation cannot be expressed in terms of elementary functions.

But it certainly has an exact analytic solution, where the word analytic means a function that can be expressed at least locally in terms of convergent power series.

I hope someone knowledgeable about this topic can fix this error.