Eta forms and the odd pseudodifferential families index
Eta forms and the odd pseudodifferential families index
Let A(t) be an elliptic, product-type suspended (which is to say parameter-dependant in a symbolic way) family of pseudodifferential operators on the fibres of a fibration φ with base Y.The standard example is A + it where A is a family, in the usual sense, of first order, self-adjoint and …