A Rational Torsion Invariant

John Ewing, Peter Loffler, Erik Kjaer Pedersen
1988 Proceedings of the American Mathematical Society  
We show that for spaces with rational cohomology an exterior algebra on odd dimensional generators, one can define a torsion invariant which is a rational number. This may be interpreted as an absolute version of the multiplicative Euler characteristic associated to a rational homotopy equivalence. 0. Introduction. Reidemeister torsion of a finite complex X, with trivial action of the fundamental group on rational homology, takes values in
doi:10.2307/2047255 fatcat:nhmll5y5wvbyxndrbwi2lwxxcm