112 citations · 856 across the 42 of their papers we have counts for
4 papers · 1 filter
Characteristic varieties of nilpotent groups and applications
Anca Macinic, Stefan Papadima
We compute the characteristic varieties and the Alexander polynomial of a finitely generated nilpotent group. We show that the first characteristic variety may be used to detect ni…
The spectral sequence of an equivariant chain complex and homology with local coefficients
Stefan Papadima, Alexander I. Suciu
We study the spectral sequence associated to the filtration by powers of the augmentation ideal on the (twisted) equivariant chain complex of the universal cover of a connected CW-…
Universal representations of braid and braid-permutation groups
Barbu Berceanu, Stefan Papadima
Drinfel'd used associators to construct families of universal representations of braid groups. We consider semi-associators (i.e., we drop the pentagonal axiom and impose a normali…
Alexander polynomials: Essential variables and multiplicities
Alexandru Dimca, Stefan Papadima, Alexander I. Suciu
We explore the codimension one strata in the degree-one cohomology jumping loci of a finitely generated group, through the prism of the multivariable Alexander polynomial. As an ap…