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19992004
most citedIntegrable lattices and their sub-lattices: from the discrete Moutard (discrete Cauchy-Riemann) 4-point equation to the self-adjoint 5-point scheme

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nlin.SI2001

The integrable discretization of the Bianchi-Ernst system

M. Nieszporski, A. Doliwa, P. M. Santini

We present the constraint for the discrete Moutard equation which gives the integrable discretization of the Bianchi-Ernst system. We also derive the discrete analogue of the Bianc…