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The concept of quasi-integrability: a concrete example
The concept quasi-integrability concrete example
2010/11/10
We use the deformed sine-Gordon models recently presented by Bazeia et al to discuss possible definitions of quasi-integrability. We present one such definition and use it to calculate an infinite num...
On integrability of Weingarten surfaces: a forgotten class
Weingarten surfaces forgotten class Finkel-Wu conjecture
2010/4/1
Rediscovered by a systematic search, a forgotten class of integrable surfaces is shown to disprove the Finkel-Wu conjecture. The associated integrable nonlinear partial differential equation $$ z_{yy}...