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Keywords:
Fredholmness; pseudo-differential operator; nonregular symbol
Fredholmness; pseudo-differential operator; nonregular symbol
Summary:
We establish the Fredholmness of a pseudo-differential operator whose symbol is of class $C^{0,\sigma }$, $0<\sigma <1$, in the spatial variable. Our work here refines the work of H. Abels, C. Pfeuffer (2020).
References:
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