Abstract
The local induction equation, or the binormal flow on space curves is a well-known model of deformation of space curves as it describes the dynamics of vortex filaments, and the complex curvature is governed by the nonlinear Schrödinger equation (NLS). In this paper, we present its discrete analogue, namely, a model of deformation of discrete space curves by the discrete nonlinear Schrödinger equation (dNLS). We also present explicit formulas for both NLS and dNLS flows in terms of the \(\tau \) function of the 2-component KP hierarchy.
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The N -soliton solution for the tangent vector has been constructed by using the bilinear formalism in [5].
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Hirose, S., Inoguchi, Ji., Kajiwara, K., Matsuura, N., Ohta, Y. (2016). dNLS Flow on Discrete Space Curves. In: Dobashi, Y., Ochiai, H. (eds) Mathematical Progress in Expressive Image Synthesis III. Mathematics for Industry, vol 24. Springer, Singapore. https://doi.org/10.1007/978-981-10-1076-7_14
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DOI: https://doi.org/10.1007/978-981-10-1076-7_14
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