Geodesic
Fredholmness of pseudo-differential operators with nonregular symbols
Czechoslovak Mathematical Journal, Tome 73 (2023) no. 3, pp. 941-954

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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).
DOI : 10.21136/CMJ.2023.0387-22
Classification : 35S05, 47A53, 47G30
Keywords: Fredholmness; pseudo-differential operator; nonregular symbol 
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Yoshitomi, Kazushi. Fredholmness of pseudo-differential operators with nonregular symbols. Czechoslovak Mathematical Journal, Tome 73 (2023) no. 3, pp. 941-954. doi: 10.21136/CMJ.2023.0387-22

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