Stationary Veselov-Novikov equation and isothermally asymptotic surfaces in projective differential geometry

Details Stationary Veselov-Novikov equation and isothermally asymptotic surfaces in projective differential geometry Stationary Veselov-Novikov equation and isothermally asymptotic surfaces in projective differential geometry

1998-05-04

arxiv.org/abs/math/9805011v1

Mathematics

Differential Geometry

Latex, 13 pages

Scientific paper

It is demonstrated that the stationary Veselov-Novikov (VN) and the stationary modified Veselov-Novikov (mVN) equations describe one and the same class of surfaces in projective differential geometry: the so-called isothermally asymptotic surfaces, examples of which include arbitrary quadrics and cubics, quartics of Kummer, projective transforms of affine spheres and rotation surfaces. The stationary mVN equation arises in the Wilczynski approach and plays the role of the projective "Gauss-Codazzi" equations, while the stationary VN equation follows from the Lelieuvre representation of surfaces in 3-space. This implies an explicit Backlund transformation between the stationary VN and mVN equations which is an analog of the Miura transformation between their (1+1)-dimensional limits.

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