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Paper   IPM / Physic / 8398
School of Physics
  Title:   Ladder Operators and Recursion Relations for the Associated Bessel Polynomials
1.  F. Fakhri
2.  A. Chenaghlou
  Status:   Published
  Journal: Phys. Lett. A
  Vol.:  358
  Year:  2006
  Pages:   345-353
  Supported by:  IPM
Introducing the associated Bessel polynomials in terms of two non-negative integers, and under an integrability condition we simultaneously factorize their corresponding differential equation into a product of the ladder operators by four different ways as shape invariance symmetry equations. This procedure gives four different pairs of recursion relations on the associated Bessel polynomials. In spite of description of Bessel and Laguerre polynomials in terms of each other, we show that the associated Bessel differential equation is factorized in four different ways whereas for Laguerre one we have three different ways.

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