56 citations · 489 across the 89 of their papers we have counts for
4 papers · 2 filters
Non-smoothable four-manifolds with cyclic fundamental group
Stefan Friedl, Ian Hambleton, Paul Melvin +1
In [HT], two of us constructed a closed oriented 4-dimensional manifold with fundamental group that does not split off . In this note we show that this 4-manifo…
Non-commutative Multivariable Reidemeister Torsion and the Thurston Norm
Stefan Friedl, Shelly Harvey
In a previous paper, the second author defined integer-valued functions delta_n on the first cohomology of a 3-manifold, generalizing McMullen's Alexander norm. It was shown that t…
Nontrivial Alexander polynomials of knots and links
Stefan Friedl, Stefano Vidussi
In this paper we present a sequence of link invariants, defined from twisted Alexander polynomials, and discuss their effectiveness in distinguish knots. In particular, we recast a…
Twisted Alexander polynomials and symplectic structures
Stefan Friedl, Stefano Vidussi
Let N be a closed, oriented 3-manifold. A folklore conjecture states that S^1 x N admits a symplectic structure only if N admits a fibration over the circle. The purpose of this pa…