Centre for Mathematical Physics and Stochastics

Department of Mathematical Sciences, University of Aarhus

Funded by The Danish National Research Foundation

MPS-RR 1999-35

October 1999

We extend results of [Sa1] and prove an index theorem for manifolds with corners of codimension 3. A splitting formula for j-invariants of Dirac operators on manifolds with a restricted class of wedge singularities into j-invariants of manifolds with corners of codimension 2 is proved. The method of proof is by applying the index theorem to a special index problem and combining with a simpler splitting formula for j-invariants.

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