The ideal-valued index for a dihedral group action, and mass partition by two hyperplanes

Pavle V. M. Blagojević, Günter M. Ziegler

We compute the complete Fadell-Husseini index of the 8 element dihedral group D_8 acting on S^d \times S^d, both for F_2 and for integer coefficients. This establishes the complete…