2 papers
math.AP1999
The homotopy classification and the index of boundary value problems for general elliptic operators
A. Yu. Savin, B. Yu. Sternin, B. -W. Schulze
We give the homotopy classification and compute the index of boundary value problems for elliptic equations. The classical case of operators that satisfy the Atiyah-Bott condition…
math.DG1999
Elliptic operators in subspaces and the eta invariant
A. Yu. Savin, B. -W. Schulze, B. Yu. Sternin
The spectral eta-invariant of a self-adjoint elliptic differential operator on a closed manifold is rigid, provided that the parity of the order is opposite to the parity of dimens…