Abstract
The 2 + 1 elliptic Toda lattice has a traveling wave type solution Qn satisfying Qn+1(x,y)=Qn(x+122,y). This solution is analogous to the lump solution of the Kadomtsev-Petviashvili (KP)-I equation. We prove that {Qn} is nondegenerate in the sense that the corresponding linearized Toda lattice operator has no nontrivial kernel.
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