Algebraic Wu classes

The Wu classes of an algebraic Poincare complex over A (C,4)) are functions 

The cohomology classes f6H (C) = (Uom (C, s A) ) of an A-module chain complex C are the chain homotopy classes of chain maps f C--- s a. 

Let C be a finite-dimensional A-module chain complex, c-symmetr ic 

Proposition 1.4.1 i) The various Wu classes are related to each other by 

The middle-dimensional intersection pairing of a 2r-dimenslonal e-symmetric complex over A (C. c)) 

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The linking Wu classes are the S-acyclic counterparts of the algebraic Wu classes of Sl- ... 

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