This is a survey (including new results) of relations ?some emergent, others established? among three notions which the 1980s saw introduced into knot theory: quasipositivity of a link, the enhanced Milnor number of a fibered link, and the new link polynomials. The Seifert form fails to determine these invariants; perhaps there exists an ?enhanced Seifert form? which does.
@article{urn:eudml:doc:43291,
title = {Quasipositivity and new knot invariants.},
journal = {Revista Matem\'atica de la Universidad Complutense de Madrid},
volume = {2},
year = {1989},
pages = {85-109},
zbl = {0684.57003},
mrnumber = {MR1012106},
language = {en},
url = {http://dml.mathdoc.fr/item/urn:eudml:doc:43291}
}
Rudolph, Lee. Quasipositivity and new knot invariants.. Revista Matemática de la Universidad Complutense de Madrid, Tome 2 (1989) pp. 85-109. http://gdmltest.u-ga.fr/item/urn:eudml:doc:43291/