Abstract
We consider on ℝ the differential-difference operator which is referred to as the Dunkl operator with parameter γ+1/2 associated with the reflection ℤ2 on ℝ. We exhibit a Sonine-type integral representation for the Dunkl kernel e γ, eigenfunction of the Dunkl operator Λγ. This enables us to construct a new Sonine integral transform on ℝ tied to Λγ, which turns out together with its dual to be transmutation operators between two Dunkl operators of different parameters.
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