In this paper we define a link homotopy invariant of spatial graphs based on the second degree coefficient of the Conway polynomial of a knot.
@article{urn:eudml:doc:43959,
title = {Link homotopy invariants of graphs in R3.},
journal = {Revista Matem\'atica de la Universidad Complutense de Madrid},
volume = {7},
year = {1994},
pages = {129-144},
zbl = {0818.57005},
mrnumber = {MR1277334},
language = {en},
url = {http://dml.mathdoc.fr/item/urn:eudml:doc:43959}
}
Taniyama, Kouki. Link homotopy invariants of graphs in R3.. Revista Matemática de la Universidad Complutense de Madrid, Tome 7 (1994) pp. 129-144. http://gdmltest.u-ga.fr/item/urn:eudml:doc:43959/