Bessel equation and Bessel function on T(q,h)

This article is devoted to present nabla (q, h)-analogues of Bessel equation and Bessel function. In order to construct series solution of nabla (q, h)-Bessel equation, we present nabla (q, h)-analysis regarding nabla generalized quantum binomial, nabla (q, h)-analogues of Taylor's formula, Gauss's binomial formula, Taylor series, analytic functions, analytic exponential function with its fundamental properties, analytic trigonometric and hyperbolic functions. We emphasize that nabla (q, h)-Bessel equation recovers classical, h- and q-discrete Bessel equations. In addition, we establish nabla (q, h)-Bessel function which is expressed in terms of an absolutely convergent series in nabla generalized quantum binomials and intimately demonstrate its reductions. Finally, we develop modified nabla (q, h)-Bessel equation, modified nabla (q, h)-Bessel function and its relation with nabla (q, h)-Bessel function.