Clarkson, P.A.Jordaan, Kerstin Heidrun2013-09-252013-09-252014-02Clarkson, PA & Jordaan, K 2014, 'The relationship between semi-classical Laguerre polynomials and the fourth Painleve equation', Constructive Approximation, vol. 39, no. 1, pp. 223-254.0176-4276 (print)1432-0940 (online)10.1007/s00365-013-9220-4http://hdl.handle.net/2263/31788We discuss the relationship between the recurrence coefficients of orthogonal polynomials with respect to a semiclassical Laguerre weight and classical solutions of the fourth Painlev´e equation. We show that the coefficients in these recurrence relations can be expressed in terms of Wronskians of parabolic cylinder functions which arise in the description of special function solutions of the fourth Painlev´e equation.en© Springer Science+Business Media New York 2013. The original publication is available at www.springerlink.comSemi-classical orthogonal polynomialsRecurrence coefficientsPainlev´e equationsWronskiansParabolic cylinder functionsHamiltoniansPostprint Article