8 citations · 9 across the 3 of their papers we have counts for
6 papers
Pro-p link groups and p-homology groups
Jonathan Hillman, Daniel Matei, Masanori Morishita
For a link in the 3-sphere and for a prime , we express the -primary information on the first homology group of -fold branched covers of in terms of its -ad…
Massey Products of Complex Hypersurface Complements
Daniel Matei
We show that, in general, there exist non-vanishing triple Massey products in the cohomology with finite field coefficients of a complex hypersurface complement. In contrast, the M…
Counting homomorphisms onto finite solvable groups
Daniel Matei, Alexander I. Suciu
We present a method for computing the number of epimorphisms from a finitely-presented group G to a finite solvable group Γ, which generalizes a formula of Gäschutz. Key to this ap…
Hall invariants, homology of subgroups, and characteristic varieties
Daniel Matei, Alexander I. Suciu
Given a finitely-generated group G, and a finite group Γ, Philip Hall defined δ_Γto be the number of factor groups of G that are isomorphic to Γ. We show how to compute the Hall in…
Cohomology rings and nilpotent quotients of real and complex arrangements
Daniel Matei, Alexander I. Suciu
For an arrangement with complement X and fundamental group G, we relate the truncated cohomology ring, H^{<=2}(X), to the second nilpotent quotient, G/G_3. We define invariants of…
Homotopy types of complements of 2-arrangements in R^4
Daniel Matei, Alexander I. Suciu
We study the homotopy types of complements of arrangements of n transverse planes in R^4, obtaining a complete classification for n <= 6, and lower bounds for the number of homotop…