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An index formula for elliptic boundary problems. (English) Zbl 0449.35043
Pseudodifferential operators with applications, C.I.M.E., Bressanone 1977, 19-30 (1978).
MSC:
35J99 Elliptic equations and elliptic systems
35R20 Operator partial differential equations (= PDEs on finite-dimensional spaces for abstract space valued functions)
47A53 (Semi-) Fredholm operators; index theories
35S99 Pseudodifferential operators and other generalizations of partial differential operators