ScalingStacks

Lemma A.4 . [056Y]

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Lemma A.4.

Let α∈ℝ∖{0,−1,−2,−3,…}\fa\in\mathbb{R}\setminus\{0,-1,-2,-3,\ldots\} and β∈ℝ\fb\in\mathbb{R}, then for each y∈ℝy\in\mathbb{R},

(A.32) Φ♯⁡(β,α,y)\displaystyle\Ku(\fb,\fa,y) =Φ♯⁡(β+1,α,y)−yα​Φ♯⁡(β+1,α+1,y),\displaystyle=\Ku(\fb+1,\fa,y)-\frac{y}{\fa}\Ku(\fb+1,\fa+1,y),
(A.33) Φ♯⁡(β,α,y)\displaystyle\Ku(\fb,\fa,y) =α+yα⋅Φ♯⁡(β,α+1,y)−α−β+1α⁡(α+1)⋅y⋅Φ♯⁡(β,α+1,y).\displaystyle=\frac{\fa+y}{\fa}\cdot\Ku(\fb,\fa+1,y)-\frac{\fa-\fb+1}{\fa(\fa+1)}\cdot y\cdot\Ku(\fb,\fa+1,y).

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