4 papers
Flexible isotopy classification of flexible links
Johan Björklund
In this paper we define and study flexible links and flexible isotopy in projective space. Flexible links are meant to capture the topological properties of real algebraic links. W…
Encomplexed Brown Invariant of Real Algebraic Surfaces in RP^3
Johan Björklund
We construct an invariant of parametrized generic real algebraic surfaces in RP^3 which generalizes the Brown invariant of immersed surfaces from smooth topology. The invariant is…
Legendrian contact homology in the product of a punctured Riemann surface and the real line
Johan Björklund
We give a combinatorial description of the Legendrian differential graded algebra associated to a Legendrian knot in PxR, where P is a punctured Riemann surface. As an application…
Real algebraic knots of low degree
Johan Björklund
In this paper we study rational real algebraic knots in . We show that two real algebraic knots of degree are rigidly isotopic if and only if their degrees and enco…