A counterexample to the strong real Jocobian conjecture.
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Sergey Pinchuk (1994)
Mathematische Zeitschrift
Mahrt, L.F., Szidarovszky, F. (1997)
Southwest Journal of Pure and Applied Mathematics [electronic only]
Jan Mařík (1991)
Mathematica Bohemica
Let and be polynomials in one variable with complex coefficients and let be a natural number. Suppose that is not constant and has only simple roots. Then there is a rational function with if and only if the Wronskian of the functions is divisible by .
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