On a discrete analog of the Tzitzeica equation
A discrete analog of the Tzitzeica equation is found in the form of quad-equation. Its continuous symmetry is an inhomogeneous Narita--Bogoyavlensky type lattice equation which defines a discretizatio
A discrete analog of the Tzitzeica equation is found in the form of quad-equation. Its continuous symmetry is an inhomogeneous Narita–Bogoyavlensky type lattice equation which defines a discretization of the Sawada–Kotera equation. The integrability of these discretizations is proven by construction of the Lax representations.
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