The system of partial differential equations
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(1)
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(2)
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Kaup's Equation
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References
Dodd, R. and Fordy, A. "The Prolongation Structures of Quasi-Polynomial Flows." Proc. Roy. Soc. A 385, 389-429, 1983.Zwillinger, D. Handbook of Differential Equations, 3rd ed. Boston, MA: Academic Press, p. 138, 1997.Referenced on Wolfram|Alpha
Kaup's EquationCite this as:
Weisstein, Eric W. "Kaup's Equation." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/KaupsEquation.html