Mathematics – Operator Algebras
Scientific paper
2002-07-20
Math. Nachr. 278 (2005), no. 11, 1297-1317
Mathematics
Operator Algebras
30 pages
Scientific paper
10.1002/mana.200410308
We define a class of boundary value problems on manifolds with fibered boundary. This class is in a certain sense a deformation between the classical boundary value problems and the Atiyah-Patodi-Singer problems in subspaces. The boundary conditions in this theory are taken as elements of the C^*-algebra generated by pseudodifferential operators and families of pseudodifferential operators in the fibers. We prove the Fredholm property for elliptic boundary value problems. This class also contains nonlocal boundary value problems of math.KT/0108107. We compute a topological obstruction (similar to the Atiyah-Bott obstruction) to the existence of elliptic boundary conditions for a given operator. Geometric operators with a nontrivial obstruction are given.
Savin Yu. A.
Sternin Yu. B.
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