Abstract
A class of zero order pseudodifferential operators on a closed manifold is considered, with symbols admitting a first kind discontinuity at a codimension one submanifold. A condition is found for such operators to be Fredholm. The formula for the index of such operators is derived, expressed in the topological terms.
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Rozenblum, G.V. Index Formulae for Pseudodifferential Operators with Discontinuous Symbols. Annals of Global Analysis and Geometry 15, 71–100 (1997). https://doi.org/10.1023/A:1006597427020
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DOI: https://doi.org/10.1023/A:1006597427020