Kernel Theorems in Spaces of Tempered Generalized Functions
Résumé
In analogy to the classical isomorphism between $\mathcal{L}\left( \mathcal{S}\left( \mathbb{R}^{n}\right) ,\mathcal{S}^{\prime}\left( \mathbb{R}^{m}\right) \right) $ and $\mathcal{S}^{\prime}\left( \mathbb{R}^{n+m}\right) $, we show that a large class of moderate linear mappings acting between the space $\mathcal{G}_{\mathcal{S}}\left( \mathbb{R}^{n}\right) $ of Colombeau rapidly decreasing generalized functions and the space $\mathcal{G}_{\tau}\left( \mathbb{R}^{n}\right) $ of temperate ones admits generalized integral representations, with kernels belonging to $\mathcal{G}_{\tau}\left( \mathbb{R}^{n+m}\right) $. Furthermore, this result contains the classical one in the sense of the generalized distribution equality.
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